3-Bean Hamburger Bake

Ingredients

• 1/2 to 1 lb. lean ground beef
• 1 medium onion, finely chopped
• 1 (1 lb.) can green lima beans*
• 1 (1 lb.) can light red kidney beans*
• 1 (1 lb.) can pork and beans*
• 1/2 c. brown sugar
• 1/2 c. catsup
• 2 Tbsp. cider vinegar
• 1 Tbsp. prepared mustard
• 1 Tbsp. Worcestershire sauce