Easy Pickled Mushrooms - cooking recipe

Ingredients

1 onion, thinly sliced
1/3 cup red wine vinegar
1/3 cup vegetable oil
1 tablespoon brown sugar
1 teaspoon Dijon mustard
2 (12 ounce) cans whole mushrooms, drained

Preparation

Bring onion, vinegar, oil, sugar, and Dijon mustard to a boil in a saucepan. Add mushrooms and simmer until liquid is slightly reduced, 5 to 6 minutes. Transfer mixture to a covered container and chill. Drain before serving.