Start by chopping the onion and mincing the garlic. Rinse the rice to remove excess starch, which helps keep it fluffy after baking. Grate your cheese fresh for the best melt and flavor.
In a skillet over medium heat, cook the ground beef until browned. Add the onions and garlic and cook until soft and fragrant. Drain any excess fat before mixing in the seasonings.
In a mixing bowl, combine the cream of mushroom soup, milk, Worcestershire sauce, salt, pepper, and paprika. Stir until smooth and creamy. This sauce will coat the rice and beef perfectly.
In your baking dish, layer the cooked rice first, then the beef mixture, and finally the peas and carrots. Pour the creamy sauce evenly over the top, making sure everything is well coated. Sprinkle the shredded cheese on top.
Bake in a preheated oven at 350°F (175°C) for 25-30 minutes, or until the cheese is bubbly and lightly golden. Let it rest for a few minutes before serving to help it set.