Spicy Macaroni and Cheese Casserole

Spicy Macaroni and Cheese Casserole 1 (7 1/4 ounce) package macaroni and cheese mix 1 lb ground beef 1⁄2 onion, diced 1 (14 ounce) can tomatoes and green chilies 1⁄2 cup milk 1⁄2 teaspoon red pepper powder 1⁄2 cup shredded cheddar cheese Make mac and cheese according to pkg instructions. Then brown and crumble ground beef with onion. Drain. In a 9x13-inch dish combine all ingredients and bake at 350 for 30 minutes.