8 strips bacon
4 onions, sliced thin
2 (28 oz.) cans baked beans
1 (16 oz.) can butter beans, drained
1 (16 oz.) can pinto beans, drained
1 (16 oz.) can lima beans, drained

SAUCE:

1/2 c. vinegar
1 tsp. garlic salt
1 tsp. salt
1 tsp. dry mustard
1/2 c. brown sugar

Partially fry bacon. Remove from pan and saute onions until soft. Drain. Place beans in a large casserole. Blend sauce ingredients and simmer 3 minutes. Mix with beans and bake at 350 degrees for 1 hour.