Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease a medium-sized baking dish with cooking spray or a little olive oil.
Step 2: Brown the Ground Beef
Heat a large skillet over medium-high heat. Add the ground beef and cook for 6–8 minutes, breaking it into small pieces with a spoon, until browned and cooked through. Drain excess fat if necessary.
Step 3: Add the Vegetables
Add the diced onion and red bell pepper to the skillet. Cook for 3–4 minutes until they begin to soften. Stir in the minced garlic and cook for another 30 seconds.
Step 4: Season the Mixture
Add the diced tomatoes, tomato paste, Italian seasoning, paprika, salt, and black pepper. Stir well and simmer for 3–5 minutes. If the mixture looks too dry, add a small splash of water or beef broth.
Step 5: Assemble the Casserole
Transfer the beef mixture to the prepared baking dish and spread it evenly. Sprinkle the mozzarella and cheddar cheese over the top.
If you’re adding cooked pasta, rice, or potatoes, mix them into the beef mixture before transferring it to the dish.
Step 6: Bake Until Golden
Bake uncovered for 15–20 minutes, or until the cheese is melted, bubbling, and lightly golden. If you prefer a deeper golden topping, broil briefly at the end, watching carefully to prevent burning.
Step 7: Garnish and Serve
Remove the casserole from the oven and let it rest for about 5 minutes. Sprinkle with fresh parsley and serve warm.
Tips for the Best Cheesy Beef Casserole
- Drain excess grease: This helps prevent an oily casserole.
- Avoid excess liquid: Drain watery canned tomatoes so the dish doesn’t become soggy.
- Grate your own cheese: Freshly grated cheese often melts more smoothly than pre-shredded cheese.
- Don’t overbake: Remove the casserole once the cheese is bubbly and golden.
- Let it rest: A short resting period makes serving easier and helps the flavors settle.
Delicious Variations
Add pasta: Mix in cooked penne, rotini, or elbow macaroni for a cheesy beef pasta casserole.
Make it spicy: Add red pepper flakes, diced jalapeños, or a pinch of cayenne pepper.
Add more vegetables: Mushrooms, zucchini, spinach, and corn all work well.
Try taco flavors: Replace the Italian seasoning with taco seasoning and use cheddar or a Mexican-style cheese blend.
Make it extra cheesy: Add a little Parmesan cheese or another layer of mozzarella before baking.
What to Serve with Ground Beef Casserole
This hearty casserole pairs well with a crisp green salad, steamed broccoli, roasted vegetables, garlic bread, or green beans. For a lighter meal, serve it with a simple cucumber salad or fresh lettuce with lemon dressing.
How to Store and Reheat
Allow leftovers to cool slightly, then refrigerate them in an airtight container within two hours of cooking. Store in the refrigerator for up to 3–4 days.
To reheat, warm individual portions in the microwave until steaming hot, or cover the baking dish and heat in a 350°F (175°C) oven until thoroughly hot. Add a little water or broth if the mixture seems dry.
For longer storage, freeze the cooled casserole in a freezer-safe container for up to 2–3 months for best quality. Thaw in the refrigerator before reheating.
Frequently Asked Questions
Can I make this casserole ahead of time?
Yes. Prepare the beef and vegetable mixture, place it in the baking dish, and refrigerate it separately from the cheese topping. Add the cheese before baking. If the dish is cold from the refrigerator, it may need extra baking time.
Can I use ground turkey instead of beef?
Absolutely. Ground turkey or ground chicken can be used instead. Since these meats are leaner, add a little olive oil if needed to keep the mixture moist.
How do I know when the casserole is ready?
The cheese should be melted and bubbling, and the filling should be hot throughout. If you add pasta or other ingredients, make sure the entire dish is thoroughly heated.
Can I make it without tomatoes?
Yes. Replace the tomatoes and tomato paste with a small amount of beef broth and a creamy sauce, or use your favorite casserole sauce. The final texture and flavor will be different.
Final Thoughts
This cheesy ground beef casserole is a simple, comforting dinner made with savory beef, vegetables, and a generous layer of melted cheese. It’s easy to customize, perfect for sharing, and ideal for turning everyday ingredients into a satisfying family meal.
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