Three-Bean Casserole

Ingredients

• 1 (10 oz.) pkg. frozen lima beans
• 3 (about 1 lb. 3 oz. each) cans baked beans (6 c.)
• 3 (about 15 1/2 oz. each) cans kidney beans, drained (5 c.)
• 1 lb. Italian link sausage or pork link sausages
• 1/2 lb. cooked ham, cut into 1/2-inch cubes
• 1/2 c. catsup
• 1/4 c. brown sugar, packed
• 1 Tbsp. salt
• 1/2 tsp. pepper
• 1/2 tsp. dry mustard
• 1 (8 oz.) can tomato sauce
• 1 medium onion, chopped (about 1/2 c.)