Cheesy Ground Beef & Pepper Foil-Pan Casserole
Yield: 4 individual casseroles
Prep: 20 minutes
Cook: 30–40 minutes
Total: about 1 hour
Difficulty: Easy
Ingredients
For the beef filling
1 lb (450 g) ground beef, preferably 85–90% lean
1 small yellow onion, finely diced
2 cloves garlic, minced
1 medium green bell pepper, diced
1 medium red bell pepper, diced
1 cup diced tomatoes, drained
1 tbsp tomato paste
1 tsp paprika
1 tsp Italian seasoning
½ tsp chili powder
½ tsp salt, plus more to taste
¼ tsp black pepper
½ tsp garlic powder
½ tsp onion powder
2 tbsp water or beef broth
1 tbsp olive oil, only if needed
For assembling
2 cups shredded mozzarella
1 cup shredded cheddar or Monterey Jack
1 green bell pepper, sliced into thin rings/strips
1 red bell pepper, sliced
½ cup diced tomato
¼ cup finely diced onion, optional
1–2 tbsp grated Parmesan, optional
A little paprika or Italian seasoning for the top
Optional additions
½ cup sliced mushrooms
½ cup cooked rice
½ cup cooked pasta
¼ cup sliced black olives
1–2 sliced jalapeños
2 tbsp chopped parsley
2–3 tbsp sour cream for serving
Hot sauce or crushed red pepper
Step-by-step instructions
1. Prepare the vegetables
Wash and dry the peppers and tomatoes.
Dice:
onion
green pepper
red pepper
Keep a little of the green and red pepper aside for decorating the tops.
Slice those reserved peppers into attractive strips or rings, similar to the photograph.
2. Brown the ground beef
Heat a large skillet over medium-high heat.
Add the ground beef and break it apart with a wooden spoon.
Cook until browned, stirring frequently.
For food safety, ground beef should reach 160°F (71°C) when checked with a food thermometer.
Drain excess grease if necessary.
Important: Don’t rely only on the meat looking brown—color isn’t a reliable indicator of safe doneness.
3. Add onion and peppers
Add the diced onion and diced peppers to the beef.
Cook for approximately 4–5 minutes, stirring occasionally, until the vegetables begin to soften.
Add the garlic and cook for another 30–60 seconds.
4. Season the filling
Add:
paprika
Italian seasoning
chili powder
garlic powder
onion powder
salt
black pepper
Stir well.
Add the tomato paste and 2 tablespoons of water or beef broth.
Cook for another 2–3 minutes.
The mixture should be moist but not watery.
5. Add the tomatoes
Fold in the drained diced tomatoes.
Cook for another 2–3 minutes.
Taste and adjust the seasoning.
For a richer filling, you can add another tablespoon of tomato paste.
For a spicy version, add:
¼–½ tsp crushed red pepper, or
1 finely chopped jalapeño.
6. Prepare the foil pans
Use four small oven-safe aluminum foil pans.
Lightly grease them with cooking spray or a thin coating of oil.
Divide the beef mixture evenly between the pans.
Optional layered version
For a more substantial casserole, layer:
Beef mixture
A little mozzarella
Cooked rice or pasta
More beef
Mozzarella and cheddar
This creates a heartier meal.
7. Add the cheese
Cover the beef mixture generously with:
mozzarella
cheddar/Monterey Jack
optional Parmesan
I recommend approximately ¾ cup cheese per individual pan.
Don’t be shy with the cheese—the photograph has a fairly substantial melted-cheese layer.
8. Arrange the vegetables
Place the reserved pepper strips/rings over the cheese.
Add a few pieces of tomato.
You can arrange them in alternating colors for the same attractive appearance as the photograph.
Sprinkle lightly with paprika or Italian seasoning.
9. Bake
Preheat the oven to:
375°F (190°C)
Place the foil pans on a sturdy baking sheet.
Bake uncovered for approximately:
20–25 minutes
until the cheese is completely melted and bubbling.
For a more browned top, switch to broil for 1–3 minutes at the end.
Watch it carefully because cheese can burn quickly.
For a casserole containing ground beef, USDA guidance is to heat the finished casserole to 165°F (74°C) internally.
10. Rest and serve
Remove from the oven and let the casseroles rest for approximately 5 minutes.
The cheese will settle and the juices will redistribute.
Finish with:
chopped parsley
fresh black pepper
Parmesan
hot sauce, if desired
Serve directly in the foil pans, but place them on plates or a heat-safe surface because the aluminum will be extremely hot.
🔥 How to get the exact look in the photograph
The visual appeal comes from three layers:
Bottom: seasoned ground beef + vegetables
↓
Middle: generous melted mozzarella/cheddar
↓
Top: colorful bell-pepper and tomato pieces
For the best appearance:
Use freshly shredded cheese.
Put some cheese underneath the vegetables and some around them.
Use both red and green peppers.
Don’t completely cover the vegetables with cheese.
Finish with a short broil to create browned cheese spots.
Don’t overcook the peppers; they should retain some color and shape.
🧀 Best cheese combination
Classic
2 cups mozzarella
1 cup cheddar
Extra creamy
2 cups mozzarella
½ cup Monterey Jack
½ cup cheddar
Pizza-style
2½ cups mozzarella
½ cup Parmesan
Spicy
mozzarella
pepper Jack
cheddar
🍚 Can I add rice?
Yes.
For a complete one-pan meal, add 2 cups cooked rice to the beef mixture.
Reduce the cheese slightly if desired.
Good choices:
white rice
brown rice
Mexican-style rice
cauliflower rice for a lower-carbohydrate version
If using cauliflower rice, sauté it first so the casserole doesn’t become watery.
🥔 Can I add potatoes?
Yes.
Use approximately 2 cups cooked diced potatoes.
Don’t add raw large potato pieces directly to this recipe because the beef and cheese can finish before the potatoes become tender.
🍝 Can I add pasta?
Yes.
Use approximately 2 cups cooked pasta.
Good choices include:
penne
rotini
shells
elbow macaroni
Mix the cooked pasta into the beef mixture before transferring it to the foil pans.
🌶️ Spicy version
Add:
1 jalapeño, diced
½ tsp crushed red pepper
½ tsp smoked paprika
pepper Jack instead of some cheddar
hot sauce to taste
For an even more Mexican-inspired version, replace the Italian seasoning with:
1 tsp cumin
1 tsp chili powder
½ tsp smoked paprika
½ tsp oregano
🥦 Vegetable-loaded version
Add any combination of:
zucchini
mushrooms
spinach
corn
broccoli
extra bell peppers
Keep the total additional vegetables around 2–3 cups so the casserole doesn’t become excessively watery.
🥩 Meat substitutions
Ground turkey
Use 1 lb ground turkey.
Cook ground poultry to 165°F (74°C).
Ground chicken
Also cook to 165°F.
Ground pork
Use the same seasoning and cook ground pork to 160°F.
Ground sausage
Italian sausage works particularly well, but reduce the added salt because sausage is already seasoned.
Vegetarian
Replace the beef with:
black beans
kidney beans
lentils
plant-based ground meat
🥣 Sauce option
If you want the casserole to be saucier, mix:
½ cup tomato sauce
2 tbsp tomato paste
½ tsp Italian seasoning
¼ tsp garlic powder
pinch of salt
2 tbsp water
Add this to the beef before assembling.
For a creamy version, add ½ cup sour cream or cream cheese to the cooked beef mixture after removing it from the heat.
❄️ Make-ahead instructions
Prepare the beef mixture and assemble the casseroles.
Allow the filling to cool before covering.
Refrigerate promptly rather than leaving the assembled casseroles at room temperature. Perishable food shouldn’t remain at room temperature for more than 2 hours (or 1 hour when temperatures exceed 90°F/32°C).
When ready to eat:
Remove from the refrigerator.
Preheat oven to 375°F.
Bake until heated completely through.
Check the center with a thermometer.
The finished casserole should reach 165°F.
🧊 Freezing
For best quality, freeze the cooked beef mixture separately and assemble with fresh cheese and vegetables later.
You can also freeze the completed casserole in an appropriate freezer-safe container.
Thaw in the refrigerator before reheating.
When reheating leftovers, bring them to 165°F. USDA recommends using shallow containers for quicker cooling and using most cooked leftovers within 3–4 days when refrigerated.
📊 Approximate nutrition
For 1 of 4 casseroles, assuming the base recipe with 1 lb 90%-lean beef and approximately 3 cups cheese:
Calories: ~600–700 kcal
Protein: ~40–45 g
Carbohydrates: ~12–18 g
Fat: ~40–45 g
Fiber: ~3–4 g
Sugar: ~6–8 g
Sodium: ~900–1,200 mg
These are estimates. Actual nutrition changes substantially depending on the beef fat percentage, cheese, salt, and optional ingredients.
Lower-calorie version
Use:
93–96% lean beef
reduced-fat mozzarella
more vegetables
less cheese
Lower-carb version
Skip rice/pasta and use extra peppers, mushrooms and zucchini.
❓Recipe Q&A
Can I make this without foil pans?
Yes. Use a regular 8×8-inch or 9×13-inch baking dish.
Can I use pre-cooked ground beef?
Yes. Just make sure it has been properly refrigerated and reheat the finished casserole to 165°F.
Why is my casserole watery?
The usual causes are watery tomatoes, too many vegetables, or not draining the beef. Drain canned tomatoes well and cook excess moisture out of the filling.
Why didn’t my cheese brown?
Move the casserole under the broiler for 1–3 minutes at the end. Stay nearby and watch it closely.
Can I use only mozzarella?
Absolutely. Mozzarella gives you the classic stretchy melted-cheese effect.
Can I use cheddar only?
Yes, although mozzarella generally gives a better stretch and melt.
Can I prepare it the night before?
Yes. Assemble it, cover, refrigerate, and bake the following day. Make sure the center reaches 165°F.
Can I use raw vegetables on top?
Yes. Bell peppers and tomatoes can go directly on top and will soften while baking.
Why is my beef dry?
You may have cooked it too long. Use moderately lean beef and avoid evaporating all the moisture from the filling.
Can I make individual servings for meal prep?
Definitely. Individual foil pans are particularly convenient for portioning and reheating.
Can I make it ahead and freeze it?
Yes, although the best texture comes from freezing the cooked beef filling and adding fresh cheese/vegetables when reheating.
Is the aluminum pan safe in the oven?
Use oven-safe aluminum pans, place them on a rigid baking sheet for support, and follow the manufacturer’s instructions. Never put an aluminum pan in a microwave unless the manufacturer specifically states that it is microwave-safe.
What should I serve with it?
Excellent sides include:
garlic bread
green salad
roasted potatoes
steamed broccoli
corn
coleslaw
rice
sautéed green beans
For a lighter meal, serve it with a large crisp salad.
⭐ My recommended version
For the closest balance of appearance + flavor + texture, I’d use:
1 lb 90% lean ground beef + onion + garlic + red/green peppers + tomato paste + diced tomatoes + paprika + Italian seasoning + mozzarella + cheddar, then top with fresh red and green pepper strips and tomato before baking at 375°F and briefly broiling the cheese.
