Brats Tater Tot Bake

1 pound uncooked bratwurst, casings removed
1 medium onion, chopped
1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
1 package (32 ounces) frozen Tater Tots
2 cups (16 ounces) sour cream
2 cups (8 ounces) shredded cheddar cheese

Crumble bratwurst into a large skillet; add onion. Cook over medium heat until meat is no longer pink; drain. Stir in the soup. Transfer to a greased 13-in. x 9-in. x 2-in. baking dish. Top with Tater Tots and sour cream. Sprinkle with cheese.

Bake, uncovered, at 350° for 35-40 minutes or until heated through and cheese is melted. Let stand for 5 minutes before serving. Makes 6 servings.