Sour Cream Chili Bake

1 pound ground beef
1/4 cup chopped onion
1 (16 ounce) can kidney beans, drained
1 (15 ounce) can tomato sauce
1 envelope taco seasoning mix
1 cup shredded Cheddar cheese
3 1/2 cups corn chips
1 1/4 cups sour cream

Cook ground beef and onion until meat is browned and onion is tender; drain. Stir in beans, tomato sauce, taco seasoning mix and 3/4 cup cheese. Sprinkle 2 1/2 cups corn chips in bottom of 8-inch square baking dish. Cover with beef mixture. Bake at 350 degrees F for 20 to 25 minutes.

Spread sour cream over chili. Top with remaining corn chips and cheese. Bake 3 to 4 minutes longer.

Makes 6 to 8 servings.