This Cheesy Ground Beef and Bell Pepper Casserole is a hearty, comforting, and easy low-carb dinner packed with seasoned ground beef, tender green peppers, creamy cheese, and a golden, bubbly layer of cheddar and mozzarella.
The beef mixture is cooked with onion, garlic, and Worcestershire sauce before being combined with cream cheese and beef broth for a rich, creamy texture. Everything is finished with plenty of melted cheese and fresh diced green peppers for a delicious contrast of flavors and textures.
It is a simple weeknight casserole that comes together quickly and makes a satisfying family meal.
Recipe Overview
| Category | Details |
| Prep Time | 15 minutes |
| Cook Time | 20 minutes |
| Total Time | 35 minutes |
| Servings | 6–8 |
| Cuisine | American |
| Course | Main Course |
| Method | Oven-Baked |
| Difficulty | Easy |
Ingredients
For the Beef Mixture
| Ingredient | Amount |
| Lean ground beef | 1½ lbs (680 g) |
| Green bell pepper, diced | 1 large |
| Yellow onion, chopped | 1 medium |
| Garlic, minced | 2 cloves |
| Cream cheese, softened | 4 oz (115 g) |
| Beef broth | ¼ cup (60 ml) |
| Worcestershire sauce | 1 tbsp |
| Coarse salt | 1 tsp |
| Freshly ground black pepper | 1 tsp |
For the Cheese Topping
| Ingredient | Amount |
| Sharp cheddar cheese, shredded | 1 cup |
| Mozzarella or provolone, shredded | 1 cup |
| Reserved diced green bell pepper | Small handful |
Instructions
1. Prepare the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9×13-inch baking dish with cooking spray or a small amount of butter or oil. Set it aside while you prepare the filling.
2. Brown the Ground Beef
Heat a large skillet over medium-high heat.
Add the ground beef and cook for approximately 6–8 minutes, breaking it apart with a wooden spoon as it cooks.
Continue cooking until the beef is browned and no longer pink. Drain any excess fat from the skillet.
3. Cook the Vegetables
Add the chopped onion and most of the diced green bell pepper to the skillet, reserving a small handful for the topping.
Cook for 4–5 minutes, stirring occasionally, until the onion becomes soft and the peppers begin to tenderize.
4. Add the Seasonings
Stir in the minced garlic, Worcestershire sauce, salt, and freshly ground black pepper.
Cook for about 1 minute, stirring constantly, until the garlic becomes fragrant.
5. Make the Creamy Beef Mixture
Reduce the heat to low.
Add the softened cream cheese and beef broth to the skillet.
Stir continuously until the cream cheese melts completely and forms a smooth, creamy coating around the seasoned beef and vegetables.
If the mixture seems particularly thick, add another tablespoon or two of beef broth until you reach a creamy consistency.
6. Transfer to the Baking Dish
Pour the creamy beef mixture into the prepared baking dish.
Use a spatula or the back of a spoon to spread everything into an even layer.
7. Add the Cheese
Sprinkle the shredded cheddar evenly over the beef mixture.
Add the shredded mozzarella or provolone on top.
Finally, scatter the reserved diced green bell pepper over the cheese. The fresh peppers add a little texture and color to the finished casserole.
8. Bake
Place the casserole in the preheated oven and bake uncovered for 15–20 minutes.
The casserole is ready when the cheese is completely melted, bubbling, and lightly golden around the edges.
9. Rest and Serve
Remove the casserole from the oven and let it rest for approximately 5 minutes before serving.
This allows the creamy filling to settle slightly and makes the casserole easier to portion.
Why You’ll Love This Recipe
This casserole is incredibly easy to prepare and uses simple ingredients that work beautifully together. The seasoned beef provides a savory base, while cream cheese gives the filling a rich and creamy consistency.
The combination of sharp cheddar and mozzarella creates a wonderfully melted, stretchy cheese topping with plenty of flavor.
Green bell peppers add freshness, mild sweetness, and a slight crunch, making every bite more interesting.
It is also a great make-ahead dinner for busy weeknights because the beef mixture can be prepared ahead of time and baked when you’re ready to eat.
Best Tips for Success
Use lean ground beef to keep the casserole from becoming excessively greasy. If you use beef with a higher fat percentage, drain the excess fat thoroughly after browning.
Soften the cream cheese before adding it to the skillet. This helps it melt quickly and evenly into the beef mixture without leaving lumps.
Do not overcook the green peppers. Cooking them just until they begin to soften allows them to retain some texture after the casserole goes into the oven.
For the best cheese topping, shred the cheese yourself if possible. Freshly shredded cheese usually melts more smoothly than pre-shredded varieties.
Allow the casserole to rest for about five minutes after baking. This makes serving easier while keeping the filling creamy and hot.
Best Cheese Options
Sharp cheddar gives the casserole a bold, slightly tangy flavor that pairs especially well with ground beef.
Mozzarella creates a stretchy, mild topping and balances the stronger cheddar.
Provolone is another excellent choice if you prefer a slightly more savory and distinctive cheese flavor.
For an extra-rich topping, you can combine cheddar, mozzarella, and a small amount of Monterey Jack.
Recipe Variations
For a spicier casserole, add diced jalapeño or a pinch of red pepper flakes to the beef mixture.
You can also use red, yellow, or orange bell peppers for a sweeter flavor and more colorful presentation.
For extra vegetables, add sliced mushrooms, zucchini, or spinach to the skillet while cooking the beef and peppers.
If you enjoy a stronger garlic flavor, increase the garlic to three cloves or add a small amount of garlic powder.
What to Serve With It
This casserole can be served on its own as a filling main course.
For a lighter meal, serve it with a crisp green salad dressed with a simple vinaigrette.
Steamed broccoli, roasted cauliflower, or sautéed green beans also pair beautifully with the creamy beef and cheese.
For those who are not following a low-carb eating style, warm crusty bread can be served alongside the casserole to soak up the creamy sauce.
Make-Ahead Instructions
Prepare the beef and vegetable mixture according to the recipe, then transfer it to the baking dish.
Allow it to cool slightly before covering the dish and refrigerating it.
When ready to bake, add the shredded cheese and reserved peppers to the top.
Bake until the casserole is heated through and the cheese is melted and bubbling. If the casserole is very cold from the refrigerator, it may require several additional minutes in the oven.
Storage
Allow leftover casserole to cool before transferring it to an airtight container.
Store in the refrigerator for up to 3–4 days.
For convenient portions, divide the leftovers into individual containers before refrigerating.
Reheating
For individual portions, microwave on medium power until heated through, stirring or rotating as needed.
For larger portions, cover the casserole with foil and reheat in a 350°F (175°C) oven until hot.
Remove the foil during the final few minutes if you want the cheese topping to become bubbly again.
Freezing
This casserole can be frozen, although the cream cheese-based filling may change slightly in texture after thawing.
For best results, allow the casserole to cool completely before wrapping it tightly and freezing.
Freeze for up to 2–3 months.
Thaw overnight in the refrigerator before reheating. Add a little extra cheese to the top before reheating if desired.
Common Mistakes to Avoid
Avoid leaving too much excess fat in the skillet after browning the beef, as it can make the finished casserole greasy.
Do not add the cream cheese over high heat. Low heat makes it easier to create a smooth and creamy sauce.
Avoid overbaking the casserole. Once the cheese is melted, bubbling, and lightly golden, it is ready.
Do not skip the resting time. Giving the casserole a few minutes to cool slightly helps the creamy filling set enough for easier serving.
Nutrition Estimate
Nutrition will vary depending on the exact ground beef and cheeses used.
| Nutrient | Approx. Per Serving |
| Calories | 430–480 kcal |
| Protein | 28–32 g |
| Fat | 32–36 g |
| Carbohydrates | 6–8 g |
| Fiber | 1–2 g |
| Net Carbohydrates | 5–7 g |
| Sugar | 3–4 g |
| Sodium | 700–900 mg |
Frequently Asked Questions
Can I use a different type of ground meat?
Yes. Ground turkey or ground chicken can be used, although the flavor and richness will be slightly different.
Can I prepare this casserole ahead of time?
Absolutely. Prepare the beef mixture and place it in the baking dish. Refrigerate it covered, then add the cheese shortly before baking.
Can I use only cheddar cheese?
Yes. Using 2 cups of shredded cheddar will give you a stronger, sharper cheese flavor and a deliciously golden topping.
Can I add more vegetables?
Yes. Mushrooms, zucchini, spinach, cauliflower, or additional bell peppers can all work well in this casserole.
Is this casserole low-carb?
It can fit into many low-carb meal plans because it contains primarily beef, vegetables, cream cheese, and shredded cheese. However, the exact carbohydrate content depends on the ingredients and serving size.
Why did my casserole turn out watery?
Excess moisture can come from the vegetables or from not draining the beef properly. Cook the vegetables until some of their moisture evaporates, and drain excess fat from the browned beef before adding the cream cheese and broth.
Final Thoughts
This Cheesy Ground Beef and Bell Pepper Casserole is a simple combination of savory seasoned beef, tender vegetables, creamy cheese, and a bubbling golden topping.
With minimal preparation and only about 20 minutes of baking time, it makes an excellent weeknight dinner when you want something hearty and comforting without spending hours in the kitchen.
Serve it straight from the oven while the cheese is warm and gooey for the best texture and flavor.