French-Style Beans
["2 cans French-style green beans, drained", "1/2 c. vinegar", "1/2 c. vegetable oil", "2 onions, sliced and rings separated"]
["Combine all ingredients and marinate all day in the refrigerator.", "Cook several slices of onion; crumble and add to beans.", "Cook in the oven at 325\u00b0 for 20 minutes."]
["green beans", "vinegar", "vegetable oil", "onions"]