1 (1 1/4 oz.) pkg. taco seasoning
2 lbs. lean ground beef, browned
2 (16 oz.) cans refried beans
1 (16 oz.) carton sour cream
8 oz. grated Mozzarella cheese
Black olives, sliced

Combine the taco seasoning with the ground beef. In a 13x9 inch casserole dish, place in layers the beans, ground beef, sour cream, cheese and olives. Heat in a 300 degree oven for about 30 minutes. Serve with tortilla chips. Makes 4 cups.