Calico Beans

Ingredients

• 1/2 lb. chopped, cooked bacon
• 1 lb. hamburger
• 1 chopped onion
• 1/2 c. ketchup
• 3/4 c. brown sugar
• 1 tsp. dried mustard
• 2 Tbsp. vinegar
• 1 (1 lb.) can butter beans
• 1 (1 lb.) can chili beans
• 1 (1 lb. 15 oz.) can pork and beans
• 1 c. cubed Velveeta cheese