If you’re looking for a comforting ground beef casserole that’s packed with flavor, easy to prepare, and topped with plenty of golden melted cheese, this Cheesy Ground Beef and Bell Pepper Casserole is a perfect choice. Tender ground beef, colorful bell peppers, onions, tomatoes, and savory seasonings are combined in a hearty filling and finished with a generous layer of bubbly cheese.
This easy casserole is the kind of meal that works beautifully for busy weeknights, family dinners, potlucks, or meal prep. It uses simple ingredients that are easy to find, and everything comes together in one baking dish. The combination of savory beef, sweet roasted peppers, and melted cheese creates a satisfying dinner that feels homemade and comforting without requiring complicated cooking techniques.
If you’re searching for easy dinner recipes, budget-friendly family meals, or a delicious way to use ground beef and vegetables, this recipe deserves a place on your weekly menu.
Why You’ll Love This Ground Beef Casserole
There are plenty of reasons this cheesy casserole is so popular:
- Easy to prepare: Simple ingredients and straightforward cooking make it ideal for busy evenings.
- Budget-friendly: Ground beef and bell peppers create a filling meal without expensive ingredients.
- Cheesy and comforting: A golden layer of melted cheese makes every serving irresistible.
- Packed with vegetables: Bell peppers and onions add color, flavor, and texture.
- Family-friendly: Mild seasonings make it easy for both kids and adults to enjoy.
- Great for leftovers: The casserole reheats beautifully the next day.
- Customizable: Add rice, pasta, beans, or your favorite vegetables to make it your own.
The result is a hearty beef and vegetable casserole with tender vegetables, savory meat, and a deliciously cheesy topping.
Ingredients
For this easy ground beef casserole, you’ll need:
- 1 lb (450 g) ground beef
- 2 large bell peppers, sliced or chopped
- 1 small onion, diced
- 2 cloves garlic, minced
- 1 cup diced tomatoes or 1 small can of diced tomatoes, drained
- 1 tablespoon tomato paste
- 1 tablespoon olive oil
- 1 teaspoon paprika
- 1 teaspoon Italian seasoning
- ½ teaspoon garlic powder
- ½ teaspoon black pepper
- ½ teaspoon salt, or to taste
- 1½ cups shredded mozzarella cheese
- ½ cup shredded cheddar cheese
You can use red, green, yellow, or orange bell peppers. Using a combination of colors makes the finished casserole especially attractive.
How to Make Cheesy Ground Beef and Bell Pepper Casserole
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9×13-inch baking dish with cooking spray or a little olive oil.
If you’re preparing individual portions like those shown in the photo, divide the mixture between small oven-safe foil or baking dishes instead.
Step 2: Prepare the Vegetables
Wash the bell peppers, remove the seeds and stems, and slice them into strips or bite-sized pieces.
Dice the onion and mince the garlic.
For a more rustic casserole, leave the pepper pieces slightly larger. For a softer, more cohesive filling, chop them into smaller pieces.
Step 3: Brown the Ground Beef
Heat the olive oil in a large skillet over medium-high heat.
Add the ground beef and cook until browned, breaking it apart with a wooden spoon as it cooks.
Once the beef is cooked through, drain any excess grease if necessary.
Add the diced onion and continue cooking for 2–3 minutes, until it begins to soften.
Step 4: Add the Peppers and Garlic
Add the bell peppers and minced garlic to the skillet.
Cook for several minutes, stirring occasionally, until the peppers begin to soften while still retaining some texture.
You don’t need to completely cook the peppers at this stage because they will continue cooking in the oven.
Step 5: Season the Filling
Add the paprika, Italian seasoning, garlic powder, salt, and black pepper.
Stir thoroughly so the spices coat the beef and vegetables.
Add the diced tomatoes and tomato paste, then stir everything together.
Allow the mixture to simmer for a few minutes so the tomato paste can blend with the beef and vegetables.
Taste and adjust the seasoning as needed.
Step 6: Transfer to the Baking Dish
Spoon the beef and pepper mixture into your prepared baking dish.
Spread it into an even layer.
If you want to make the casserole more substantial, you can add cooked rice or pasta at this stage.
Step 7: Add Plenty of Cheese
Sprinkle the shredded mozzarella evenly over the top.
Add the cheddar cheese over the mozzarella.
The combination of mozzarella and cheddar creates a delicious balance of stretchiness, creaminess, and sharp cheesy flavor.
For an especially golden topping, make sure the cheese reaches close to the edges of the casserole.
Step 8: Bake Until Golden and Bubbly
Place the casserole in the preheated oven.
Bake for approximately 20–25 minutes, or until the cheese has completely melted and the edges are bubbling.
For a more deeply browned topping, switch the oven to broil for the final 1–2 minutes. Watch carefully because the cheese can burn quickly under the broiler.
Remove the casserole from the oven and let it rest for about 5 minutes before serving.
Tips for the Best Cheesy Beef Casserole
Don’t overcook the peppers. You want them tender but still flavorful rather than completely mushy.
Drain excess grease. Depending on the fat content of your ground beef, draining the skillet can prevent the casserole from becoming greasy.
Use freshly shredded cheese. It often melts more smoothly than pre-shredded cheese.
Don’t skip the seasoning. Ground beef and peppers benefit from plenty of savory herbs and spices.
Let the casserole rest. A few minutes of resting makes the casserole easier to serve and allows the filling to settle.
Best Bell Peppers to Use
Any bell pepper can work in this recipe.
Green Bell Peppers
Green peppers have a slightly more savory, earthy flavor and provide a nice contrast to the rich beef and cheese.
Red Bell Peppers
Red peppers are sweeter and become deliciously tender when roasted.
Yellow and Orange Bell Peppers
These varieties add mild sweetness and vibrant color to the casserole.
For the best visual appeal, use two or three different colors.
Easy Variations
This ground beef and pepper casserole is easy to customize depending on what you have available.
Add Rice
For a more filling meal, mix in 2 cups of cooked rice. White rice, brown rice, jasmine rice, or leftover rice can all work well.
This creates a delicious cheesy beef and rice casserole that’s particularly good for feeding a family.
Add Beans
Black beans, kidney beans, or pinto beans can add extra protein and make the casserole even more filling.
Make It Mexican-Inspired
Replace the Italian seasoning with taco seasoning and add corn, black beans, and green chilies.
Top with cheddar or a Mexican cheese blend and serve with sour cream, avocado, and fresh cilantro.
Add Mushrooms
Sliced mushrooms pair beautifully with ground beef and add a savory, meaty texture.
Make It Spicy
Add sliced jalapeños, crushed red pepper flakes, cayenne pepper, or hot sauce.
Pepper Jack cheese is another excellent choice for a spicy variation.
What to Serve With Ground Beef and Pepper Casserole
Because this casserole is hearty and cheesy, lighter side dishes pair especially well with it.
Try serving it with:
- Fresh green salad
- Cucumber and tomato salad
- Steamed broccoli
- Roasted green beans
- Garlic bread
- Corn on the cob
- Roasted vegetables
If you add rice directly to the casserole, you can simply serve it with a fresh salad for a complete easy family dinner.
Make It a Complete One-Dish Meal
One of the easiest ways to make this casserole even more convenient is to add cooked rice directly to the beef and pepper mixture.
The rice absorbs the savory tomato and beef juices while the cheese creates a golden topping.
You can also add additional vegetables such as zucchini, mushrooms, corn, spinach, or chopped carrots.
This makes the recipe particularly useful when you’re trying to use vegetables already sitting in your refrigerator.
How to Store Leftovers
Allow the casserole to cool before transferring leftovers to an airtight container.
Store it in the refrigerator and enjoy within a few days.
For the best texture, reheat individual servings in the oven, toaster oven, or air fryer. This helps the cheese become bubbly again while warming the filling evenly.
The microwave is also convenient for quick lunches, although the cheese topping won’t become as crispy.
Can You Freeze This Casserole?
Yes, this casserole can be frozen.
Allow it to cool completely before transferring it to a freezer-safe container.
For individual meal prep portions, divide the casserole into smaller containers before freezing. This makes it easy to thaw and reheat only what you need.
If possible, freeze the casserole before adding the final cheese topping. Add fresh cheese when reheating for a better texture.
Thaw overnight in the refrigerator and reheat until the center is hot.
Frequently Asked Questions
Can I use ground turkey instead of ground beef?
Yes. Ground turkey is an excellent substitute if you prefer a leaner meat. You may want to add extra herbs and spices because turkey has a milder flavor.
Can I use frozen bell peppers?
Fresh bell peppers are ideal, but frozen peppers can work in a pinch. Because frozen vegetables contain more moisture, allow them to cook until excess liquid has evaporated before assembling the casserole.
What cheese melts best on a casserole?
Mozzarella, cheddar, Monterey Jack, Colby Jack, and Pepper Jack are all excellent choices. A combination of mozzarella and cheddar gives this casserole both stretch and flavor.
Can I make this casserole ahead of time?
Yes. Prepare the beef and pepper mixture, transfer it to the baking dish, cover it, and refrigerate. Add the cheese shortly before baking for the best results.
How do I make this casserole healthier?
Use lean ground beef, increase the amount of vegetables, choose reduced-fat cheese if desired, and serve it with a large fresh salad.
A Budget-Friendly Dinner the Whole Family Can Enjoy
Ground beef is one of the most versatile ingredients for creating affordable family meals. Combined with inexpensive bell peppers, onions, tomatoes, and cheese, it can become a filling casserole that stretches several servings.
This makes the recipe particularly useful when you’re planning budget-friendly dinners or trying to make the most of ingredients already in your kitchen.
You can also adapt the recipe based on what you have available. Leftover vegetables, cooked rice, beans, or different types of cheese can all find a home in this casserole.
Final Thoughts
This Cheesy Ground Beef and Bell Pepper Casserole is everything you want in a comforting homemade dinner: savory ground beef, tender colorful peppers, flavorful tomatoes, and plenty of gooey melted cheese baked together until golden and bubbling.
It’s easy enough for a busy weeknight but satisfying enough for a weekend family dinner. You can keep the recipe simple or customize it with rice, beans, mushrooms, extra vegetables, or spicy seasonings.
If you’re searching for an easy ground beef recipe, a budget-friendly casserole, or a delicious one-dish family meal, this cheesy beef and pepper casserole is a fantastic option.
Serve it hot with a crisp green salad or roasted vegetables, and enjoy a comforting homemade dinner that’s full of flavor without requiring complicated preparation.
