Baked Beans-Beef Style
["1 chopped onion", "2 Tbsp. butter", "1 lb. hamburg", "1/4 tsp. salt", "1 c. ketchup", "2 Tbsp. mustard", "2 tsp. vinegar", "2 (1 lb.) cans pork and beans", "1 (1 lb.) can kidney beans"]
["Saute onions in butter, add hamburg and brown.", "Drain off fat. In 2-quart casserole dish, add hamburg, salt, ketchup, mustard, vinegar and beans.", "Mix well and cover and bake at 400\u00b0 for 30 minutes."]
["onion", "butter", "hamburg", "salt", "ketchup", "mustard", "vinegar", "pork", "kidney beans"]