Creating Cheesy Hamburger Rice Casserole is a straightforward process. Follow these step-by-step instructions to prepare this delightful meal:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C).
2. Brown the Beef: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic, sautéing until fragrant. Then, add the ground beef, cooking until browned and cooked through. Drain any excess fat.
3. Add Ingredients: Stir in the uncooked rice, cream of mushroom soup, diced tomatoes (with juice), beef broth, frozen vegetables, salt, pepper, and Italian seasoning. Mix well to combine all ingredients.
4. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it evenly.
5. Cover and Bake: Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes.
6. Add Cheese: After 25 minutes, remove the foil and sprinkle shredded cheddar cheese over the top of the casserole.
7. Bake Again: Return to the oven and bake uncovered for an additional 5-10 minutes, or until the cheese is melted and bubbly.
8. Serve: Once done, take the casserole out of the oven and let it cool for a few minutes before serving.

By following these simple steps, you’ll be able to whip up a delicious Cheesy Hamburger Rice Casserole effortlessly!