Creating the Cheesy Beef and Rice Casserole is simple when you follow these straightforward steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) to get it ready for baking.
2. Cook Beef: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic, sautéing until softened.
3. Brown the Meat: Add the ground beef to the skillet. Cook until browned, breaking it apart with a spoon as it cooks. Drain excess fat if necessary.
4. Add Rice and Seasoning: Stir in the rice, salt, black pepper, paprika, and Italian seasoning. Mix well to combine all ingredients.
5. Incorporate Broth and Tomatoes: Pour in the beef broth and diced tomatoes. Stir everything together, bringing the mixture to a gentle simmer.
6. Combine Ingredients: If using, add the frozen peas and stir to combine. Allow the mixture to cook for about 5 minutes.
7. Transfer to Baking Dish: Pour the beef and rice mixture into a greased 9×13-inch baking dish, spreading it evenly.
8. Add Cheese: Sprinkle the shredded cheddar cheese evenly over the top.
9. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the cheese is melted and bubbly.
10. Let It Rest: Once baked, remove from the oven and let the casserole rest for 5-10 minutes before serving.

These steps will guide you in effortlessly creating this incredible casserole that is sure to become a family favorite.