Ground Beef Casserole on the Pellet Grill: Cheesy, Saucy, and Smoky

A good ground beef casserole ends the “what’s for dinner” debate. It’s affordable, it feeds a crowd, and it stays hot on the table while everyone gets seated. Cooking it on a pellet grill adds something the oven can’t: a touch of smoke and deeply browned, bubbly edges.

This recipe layers browned beef, a seasoned tomato sauce, tender pasta, and a crisp cheese-and-panko top. You’ll get exact temperatures, real cook times, and fixes for the usual problems like grease and soupy sauce. If you like this style of dinner, our easy ground beef recipes have plenty more weeknight options.

Quick Answer

Bake ground beef casserole on a pellet grill at 350°F (177°C) for 35 to 40 minutes, covered for 20 and uncovered for the rest. It’s done when the center reads 165°F (74°C), the USDA’s safe minimum internal temperature for casseroles. Rest it 10 minutes before serving so it sets.

Why This Ground Beef Casserole Works

Most casseroles go wrong in one of three ways: they’re greasy, soupy, or dry. This version avoids all three by controlling each stage instead of dumping everything in a pan.

• Browned beef, drained well. Browning builds flavor, and draining the fat keeps the sauce from turning oily.
• Pasta cooked short. The noodles finish cooking in the sauce, so they stay tender instead of mushy.
• Cream cheese in the sauce. It thickens the tomato base and gives a creamy texture without a can of soup.
• Covered, then uncovered. The foil stage keeps moisture in. The uncovered stage browns the cheese and lets smoke reach the top.
• A real temperature target. You cook to 165°F (74°C) in the center, not to a guess.

The pellet grill adds steady heat and light smoke. Because the casserole sits in a pan and is covered for part of the cook, you get a gentle smoky background rather than a heavy barbecue punch.

Ingredients and Equipment

This makes 6 to 8 servings in a deep 9×13-inch (23×33 cm) baking dish.

For the beef and sauce

• 1½ lb (0.68 kg) ground beef, 80/20
• 1 medium yellow onion, diced (about 1 cup)
• 1 bell pepper, diced
• 3 garlic cloves, minced
• 1 jar (24 oz/680 g) marinara sauce
• 1 can (8 oz/225 g) tomato sauce
• ½ cup (120 mL) beef broth
• 4 oz (115 g) cream cheese, cubed
• 1 tbsp Worcestershire sauce
• 1 tsp smoked paprika
• 1 tsp garlic powder
• 1 tsp dried oregano
• 1 tsp kosher salt, plus more to taste
• ½ tsp black pepper

For the pasta and topping

• 8 oz (225 g) dry rotini or penne (about 4 cups cooked)
• 1 cup (4 oz/115 g) shredded mozzarella
• 1 cup (4 oz/115 g) shredded sharp cheddar
• ½ cup (50 g) panko breadcrumbs
• ¼ cup (25 g) grated Parmesan
• 2 tbsp melted butter

Equipment

• Pellet grill (or any cooker you can hold at 350°F/177°C with indirect heat)
• 12-inch (30 cm) cast iron or heavy skillet
• Deep 9×13-inch (23×33 cm) baking dish and a sheet pan to set it on
• Foil and cooking spray
• Instant-read thermometer

Substitutions

Ingredient	Swap	Notes
Ground beef 80/20	85/15 or ground turkey	Leaner meat gives less grease but a little less flavor.
Rotini	Penne, shells, or elbow macaroni	Any short pasta with ridges or cups holds sauce well.
Marinara	Your own tomato sauce	Use a sauce you like the taste of, since it is the main flavor.
Cream cheese	Mascarpone or sour cream	Sour cream adds tang and gives a looser sauce.
Panko	Crushed buttery crackers	Crackers brown faster, so watch them.
Pecan pellets	Oak or cherry	See below for what to avoid.

For pellets, oak, pecan, and cherry give a gentle smoke that suits tomato and cheese. Our guide to the best Camp Chef pellets breaks down flavors by food. Go easy on hickory and skip mesquite here, because a casserole is delicate and strong smoke can taste bitter.

Choosing and Prepping Ground Beef for Casserole

Prep takes about 25 minutes. Most of that is browning the beef and building the sauce, so you can cook the pasta while the sauce simmers.

Pick the right ground beef

Ground beef at 80/20 (80% lean, 20% fat) has the best flavor and browns well, as long as you drain it. Leaner beef works, but it can taste dry and needs a bit more broth. Buy the package with the latest date and keep it cold on the way home.

Per USDA guidance, store raw ground beef at 40°F (4°C) or colder and use it within 1 to 2 days or freeze it. If it’s frozen, thaw it in the refrigerator, and cook it within 1 to 2 days of thawing. Don’t rinse raw beef, and wash your hands after handling it.

Brown the beef

Heat a 12-inch (30 cm) skillet over medium-high heat. Add the beef in an even layer and let it sit for 2 to 3 minutes before breaking it up, so it browns instead of steaming. Cook 8 to 10 minutes total, breaking it into pea-sized crumbles, until no pink remains and the pieces have deep brown edges.

Don’t judge safety by color alone. USDA says that you should never rely on color or firmness to tell if meat is done, which is why the finished casserole gets a thermometer check in the center.

Common Mistake: skipping the drain. Leaving the beef fat in the pan is the number one cause of a greasy casserole. Tilt the skillet, spoon off all but 1 tablespoon of fat, and keep that tablespoon for the onions.

Build the sauce

Add the onion and bell pepper to the skillet and cook 4 to 5 minutes until soft. Stir in the garlic, smoked paprika, garlic powder, oregano, salt, and pepper, and cook 30 seconds. Pour in the marinara, tomato sauce, broth, and Worcestershire, then simmer 8 to 10 minutes until the sauce coats a spoon.

Off the heat, stir in the cubed cream cheese until it melts into a rosy sauce. Taste it now and adjust the salt. The sauce should taste slightly bold, because the pasta will mellow it.

Cook the pasta short

Boil the pasta in well-salted water for 2 minutes less than the package says. It should be firm in the middle, because it finishes cooking in the pan. Drain it and don’t rinse it, so the starch helps the sauce cling.

Pitmaster Tip: set up a sheet pan. A full 9×13-inch (23×33 cm) casserole can bubble over on the grate and smoke up your fire pot. Put the baking dish on a sheet pan so spills land in the pan, not the grill.

Step-by-Step Ground Beef Casserole Instructions

1. Preheat the pellet grill. Fill the hopper with pecan, oak, or cherry pellets. Set the grill to 350°F (177°C) and let it heat for 10 to 15 minutes with the lid closed.
2. Combine the filling. In a large bowl or the skillet, stir the drained pasta into the beef sauce. Fold in ½ cup of the mozzarella and ½ cup of the cheddar.
3. Fill the dish. Spray the baking dish with cooking spray and spoon in the mixture. Smooth the top with a spatula and tap the dish to settle it.
4. Cover with foil. Spray the underside of a sheet of foil so nothing sticks, then seal it snugly over the dish.
5. Set it on the grill. Place the dish on its sheet pan on the grate, away from the fire pot if your grill has a hot side. Close the lid.
6. Bake covered for 20 minutes. Resist peeking. The covered stage heats the center and keeps the pasta from drying.
7. Mix the topping. While it bakes, stir the panko, Parmesan, and melted butter together, and combine it with the remaining mozzarella and cheddar.
8. Uncover and top. Remove the foil carefully, away from your face, and scatter the cheese and crumb mixture over the top.
9. Bake uncovered 15 to 20 minutes. Cook until the edges bubble and the top turns golden brown.
10. Check the temperature. Slide an instant-read thermometer into the center of the dish. Pull it at 165°F (74°C).
11. Rest 10 minutes. Let it sit before scooping so the sauce thickens and the layers hold together.

No separate “pitmaster pull temp” applies here. This dish isn’t cooked for tenderness the way a brisket is. You’re finishing it when the center reaches 165°F (74°C), which is the USDA minimum for casseroles and clears the 160°F (71°C) minimum for ground beef.

Time and Temperature Table

These times are estimates for a deep 9×13-inch (23×33 cm) dish. Pan material, depth, and starting temperature all change the timing, so use the thermometer as the final judge.

Cooker	Set temp	Covered	Uncovered	Notes
Pellet grill, gentle	325°F (163°C)	25 min	20–25 min	More smoke, slower browning
Pellet grill, recommended	350°F (177°C)	20 min	15–20 min	Best balance of smoke and browning
Pellet grill, faster	375°F (190°C)	15 min	15 min	Watch the top for dark spots
Gas grill, indirect	350°F (177°C)	20 min	15–20 min	Rotate the dish once
Charcoal kettle, two-zone	350°F (177°C)	20 min	15–20 min	Add a small chunk of wood
Oven	375°F (190°C)	20 min	15 min	Use the middle rack

If the casserole goes in cold from the refrigerator, add 10 to 15 minutes to the covered stage.

How to Tell When Ground Beef Casserole Is Done

The thermometer decides. Put the probe in the center of the dish, not near the edge, and avoid touching the bottom of the pan. A reading of 165°F (74°C) means it’s done.

The visual cues should match. The edges bubble steadily, the cheese is golden with a few darker brown spots, and the sauce looks thick and glossy, not watery. When you press the top gently, it should feel set and not wobble.

If the top is browned but the center reads low, cover the dish loosely with foil and cook 5 to 10 minutes more. If the center is hot but the top is pale, move it to the hottest part of the grate or raise the temperature to 400°F (204°C) for the last 3 to 5 minutes.

Resting, Slicing, and Serving

Rest the casserole for 10 minutes, tented loosely with foil. It looks like a long time, but the sauce thickens as it cools slightly, and the layers hold together when you scoop. Cutting right away gives you a runny pile instead of neat squares.

Use a sharp spatula or large spoon to cut the casserole into 6 to 8 squares. Lift from the corner first, then the rest comes out cleanly. Add fresh chopped parsley or basil and a sprinkle of Parmesan to finish.

Serve it hot with a side that adds crunch or acid. A salad, roasted vegetables, or bread to scoop up the sauce all work well.

What to Serve With Ground Beef Casserole

This dish is rich and cheesy, so the best sides bring freshness, crunch, or smoke. Try these.

• Vegetables: Grilled bell peppers share the grill and add a sweet, charred bite. Pellet grill Brussels sprouts bring crispy edges against the soft pasta.
• Cabbage: Cabbage on a pellet grill makes a simple, smoky side that cuts through the cheese.
• Bread: Thick slices of grilled bread are ideal for mopping up leftover sauce.
• Salad: A crisp Caesar or an arugula salad with lemon dressing balances the richness.

If you want the sides ready at the same time, start the vegetables on the grate during the uncovered stage. They’ll finish while the casserole rests.

Storing, Freezing, and Reheating Leftover Ground Beef Casserole

Get leftovers into the refrigerator quickly. USDA says to never leave perishable food out for more than 2 hours, or 1 hour when it’s 90°F (32°C) or hotter .

• Refrigerator: According to the USDA’s leftovers guidance, leftovers keep for 3 to 4 days. Store them in shallow, covered containers so they cool fast.
• Freezer: Frozen leftovers keep for 3 to 4 months. They stay safe longer, but can lose moisture and flavor. Wrap portions tightly or use freezer-safe containers.
• Thawing: Thaw in the refrigerator, in cold water, or in the microwave. Reheating from frozen is safe but takes longer.
• Reheating: Reheat until the center reaches 165°F (74°C) on a thermometer. Cover leftovers while reheating to hold in moisture.

For the best texture, reheat a square in a 350°F (177°C) oven for 20 to 25 minutes, covered with foil and a spoonful of broth or water. In the microwave, cover the plate, use 70% power, and stir or rotate halfway through. Pasta can taste a little drier the next day, so a splash of liquid helps.

For make-ahead cooking, assemble the casserole without the cheese-and-crumb topping, cover it, and refrigerate up to 24 hours. Add the topping on cooking day. This is my general guidance and not a USDA time limit.

Variations: Pellet Grill, Offset, Charcoal, and Oven Backup

Pellet grill (the main method)

The recipe above is written for a pellet grill. The steady temperature, lid, and light smoke make it ideal for a covered baking dish.

Offset smoker

Run the firebox for a stable 350°F (177°C) in the cook chamber, using small splits of oak or pecan. Place the dish on the far side from the fire and rotate it halfway through. Keep the smoke thin and blue, since heavy white smoke makes tomato sauce taste harsh.

Charcoal kettle

Bank hot coals on one side for a two-zone fire. Set the vents to hold 350°F (177°C), add one small chunk of cherry or oak, and put the dish on the cool side with the lid closed. Rotate the dish once so it browns evenly.

Gas grill

Light one or two burners, set the dish over the unlit side, and hold 350°F (177°C). A foil pouch of wood chips adds a little smoke if you want it.

Oven backup

Bake at 375°F (190°C), covered for 20 minutes and uncovered for 15, until the center reads 165°F (74°C). You won’t get smoke, but the texture is just as good. If you want a lighter pasta night, see our dinner ideas with pasta.

Flavor variations

• Cheeseburger style: Add 2 tbsp yellow mustard, a diced pickle, and swap in all cheddar.
• Taco style: Use taco seasoning, salsa instead of marinara, and top with pepper jack. You can browse more easy pasta recipes for other pasta-based ideas.
• Potato version: Replace the pasta with 1½ lb (0.68 kg) thinly sliced, par-cooked potatoes. Plan on an extra 10 to 15 minutes.
• Rice version: Use 2 cups cooked rice in place of the pasta and add ½ cup extra broth.
• Smoked cheese upgrade: Use cheese you smoked ahead of time. Our smoked cheese recipe shows how.

Pitmaster Tip: add smoke at the right time. The foil stage blocks most smoke, so the uncovered stage is where smoke flavor happens. If you want more, lower the grill to 325°F (163°C) for the uncovered portion and add 5 to 10 minutes.

Troubleshooting Ground Beef Casserole Problems

Problem	Likely cause	Fix
Greasy top or pooled oil	Beef not drained, or oily pre-shredded cheese	Drain well, blot with paper towels, and shred cheese from a block
Soupy, watery sauce	Sauce not simmered or too much broth	Simmer until thick, reduce the broth, and rest 10 minutes before serving
Dry casserole	Overbaked or never covered	Cover for the first 20 minutes and pull at 165°F (74°C)
Mushy pasta	Pasta fully cooked before baking	Cook it 2 minutes short of the package time
Pale top	Not enough uncovered time or low heat	Add 5 minutes uncovered or finish at 400°F (204°C) for 3 minutes
Burned top	Hot spots on the grate	Tent loosely with foil and rotate the dish
Bland flavor	Under-seasoned sauce	Add salt, Worcestershire, or a splash of vinegar before assembling
Bitter smoke taste	Heavy wood or dirty smoke	Switch to pecan, oak, or cherry and check your fire pot

Food safety notes

• Keep raw ground beef cold and separate from ready-to-eat foods.
• Wash your hands, the skillet handle, and any surfaces that touched raw beef.
• Check the center of the casserole with a clean thermometer.
• Cool and refrigerate leftovers quickly.

Ground Beef Casserole Recipe Card

Yield: 6–8 servings
Prep time: 25 minutes
Cook time: 35–40 minutes
Grill temp: 350°F (177°C), indirect
Pull temp: 165°F (74°C) in the center
Rest time: 10 minutes

Ingredients: 1½ lb (0.68 kg) 80/20 ground beef; 1 onion; 1 bell pepper; 3 garlic cloves; 24 oz (680 g) marinara; 8 oz (225 g) tomato sauce; ½ cup (120 mL) beef broth; 4 oz (115 g) cream cheese; 1 tbsp Worcestershire; seasonings (1 tsp each smoked paprika, garlic powder, oregano, salt; ½ tsp pepper); 8 oz (225 g) rotini; 1 cup mozzarella; 1 cup cheddar; ½ cup panko; ¼ cup Parmesan; 2 tbsp butter.

Short steps:

1. Heat the pellet grill to 350°F (177°C).
2. Brown the beef, drain it, and cook the onion and pepper.
3. Add seasonings, sauces, and broth, simmer 8–10 minutes, then melt in the cream cheese.
4. Cook the pasta 2 minutes short, then fold it into the sauce with half the cheese.
5. Pour into a sprayed 9×13-inch (23×33 cm) dish, cover with foil, and bake 20 minutes.
6. Top with the remaining cheese and crumbs, then bake uncovered 15–20 minutes.
7. Check for 165°F (74°C) in the center, then rest 10 minutes.

Ground Beef Casserole FAQ

What temperature should ground beef casserole be cooked to?

Cook ground beef casserole until the center reaches 165°F (74°C) on an instant-read thermometer. That is the USDA minimum for casseroles, and it also covers the 160°F (71°C) minimum for ground beef. Check the middle of the pan, not the edge, because the center heats last.

How long do you bake ground beef casserole at 350°F?

On a pellet grill set to 350°F (177°C), a 9×13-inch (23×33 cm) ground beef casserole takes 35 to 40 minutes: about 20 covered with foil, then 15 to 20 uncovered to brown the cheese. Pans of different depth or material change the timing, so rely on the thermometer reading, not the clock.

Can you make ground beef casserole ahead of time?

Yes. Assemble the casserole, keep the beef mixture cold, cover it, and refrigerate up to 24 hours before baking. Hold the cheese topping until cooking day for the best melt. Cold pans need 10 to 15 extra minutes in the oven or on the grill, so check that the center reaches 165°F (74°C).

Can you freeze ground beef casserole?

Yes. Cool the baked casserole, wrap it tightly, and freeze it for 3 to 4 months, per USDA leftovers guidance. Thaw in the refrigerator, then reheat covered until the center hits 165°F (74°C). Frozen leftovers stay safe longer but can lose moisture and flavor, so don’t push past four months.

How do you keep ground beef casserole from being greasy?

Drain the fat after browning with a colander or spoon. Press the cooked beef between paper towels if it looks shiny. Use freshly shredded cheese, since pre-shredded cheese can release oil. Leave the pan uncovered for the last 15 minutes so excess liquid cooks off.

Can you cook ground beef casserole on a pellet grill?

Yes. A pellet grill works like an outdoor oven, and the uncovered stage adds light smoke flavor. Set it to 350°F (177°C), use a foil-covered 9×13-inch (23×33 cm) pan, and pick mild pellets like pecan, oak, or cherry. Heavy hickory can overpower the tomato sauce and cheese.

Conclusion

A great ground beef casserole comes down to a few habits: brown and drain the beef, cook the pasta short, simmer the sauce until it’s thick, and cover then uncover the dish. Bake it at 350°F (177°C) on the pellet grill, pull it at 165°F (74°C) in the center, and let it rest 10 minutes before you scoop.

Once you’ve made this ground beef casserole once, it’s easy to remix with taco seasoning, potatoes, rice, or smoked cheese. Fire up the grill, grab your thermometer, and put a bubbly, smoky pan of comfort food on the table tonight.