4 slices bacon, chopped
1 med. onion, chopped
1 lg. can baked beans (16 oz.)
1 can kidney beans, drained (16 oz.)
1 can pinto beans (16 oz.)
1/4 lb. Cheddar cheese, cubed
1/2 c. brown sugar
1/3 c. ketchup
2 tsp. Worcestershire sauce
Grated Parmesan cheese

Lightly brown bacon and onions in a skillet. Combine with rest of ingredients and pour into a buttered casserole dish. Bake at 350 degrees for 30 minutes. Top with Parmesan cheese and bake 5 minutes more.