Cook the beef: In a large skillet, heat the olive oil over medium heat. Add the chopped onions and cook until translucent. Add the minced garlic and cook for another minute. Add the ground beef and cook until browned. Drain any excess fat.
- Season the beef: Add the Italian seasoning, salt, and pepper to the beef. Stir well to combine.
Prepare the vegetables: Slice the green and red bell peppers.
Assemble the casserole:
In the aluminum foil containers or baking dish, spread a layer of marinara sauce at the bottom.
Add a layer of cooked ground beef.
Add a layer of sliced bell peppers and black olives.
Sprinkle a layer of shredded mozzarella cheese on top.
Repeat layers if necessary, ending with a final layer of cheese on top.
Bake the casserole: Place the containers or baking dish in the preheated oven. Bake for 20-25 minutes or until the cheese is melted and bubbly.
Serve hot and enjoy your delicious baked cheesy beef and veggie casserole!
Feel free to modify the recipe according to your taste. Enjoy your meal!
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Thanks