Depression Casserole
["1 large onion, chopped", "1 to 2 Tbsp. cooking oil", "1/2 c. ketchup", "1/2 c. vinegar", "1 tsp. dry mustard", "1/4 tsp. pepper", "1 pkg. frankfurters, cut into 1-inch chunks", "toast points or cooked rice (optional)"]
["In a saucepan, saute onion in oil until tender.", "Stir in ketchup, water, vinegar, mustard and pepper.", "Bring to a boil, stirring occasionally.", "Place franks in a 1-quart baking dish. Pour sauce over.", "Bake, uncovered, at 375\u00b0 for 30 minutes.", "Serve over toast points or rice.", "Yields 5 servings."]
["onion", "cooking oil", "ketchup", "vinegar", "dry mustard", "pepper", "frankfurters", "points"]