Follow these simple steps to bring this delightful dish to life in your kitchen:

1. Preheat your oven to 375°F (190°C).
2. In a large skillet over medium heat, add the olive oil. Sauté the onions and bell peppers until they start to soften, about 5 minutes. Add the garlic and cook for another minute until fragrant.
3. Add the ground beef to the skillet and cook until browned, breaking it apart with a spoon as it cooks. Season with salt, black pepper, and smoked paprika.
4. Stir in the heavy cream and Worcestershire sauce, allowing the mixture to simmer for 2-3 minutes until slightly thickened. If you like a bit of heat, add the red pepper flakes at this stage.
5. Transfer the beef mixture to a baking dish. Top evenly with mozzarella and cheddar cheese.
6. Bake in the preheated oven for 15-20 minutes, or until the cheese is bubbly and golden brown.
7. Let the casserole cool for a few minutes before serving, allowing the flavors to meld beautifully.

Remember, cooking is as much about intuition as it is about instruction. Trust your senses, as my abuela taught me, and adjust the seasonings to your liking.