Marinated Mushrooms
["1/3 c. red wine vinegar", "1/3 c. oil", "1 small onion, thinly sliced and separated into rings", "1 tsp. salt", "2 tsp. dried parsley", "1 tsp. prepared mustard", "1 Tbsp. brown sugar"]
["Bring all ingredients to a boil; add two 8 ounce cans mushroom caps (drained).", "Simmer 5 to 6 minutes."]
["red wine vinegar", "oil", "onion", "salt", "parsley", "mustard", "brown sugar"]