1 lb ground beef
1/2 cup diced onion
1/2 cup diced green bell pepper
1 cup shredded cheddar cheese
1 cup shredded mozzarella cheese
1/2 cup mayonnaise
1/2 cup heavy cream
2 large eggs
1 tsp garlic powder
1 tsp salt
1/2 tsp black pepper
Preheat oven to 375°F (190°C).
In a large skillet, cook ground beef, onion, and green pepper over medium heat until meat is browned. Drain any excess fat.
In a large bowl, whisk together mayonnaise, heavy cream, eggs, garlic powder, salt, and pepper.
Add the cooked beef mixture to the bowl and mix well.
Transfer the mixture to a 9×13 inch baking dish and sprinkle the cheddar cheese and mozzarella cheese on top.
Bake for 25-30 minutes, or until the cheese is melted and the casserole is set.
Serve hot and enjoy!
Note: Feel free to add any other ingredients you like, such as mushrooms, bacon, or diced tomatoes.