Ingredients

• 3 portobello mushrooms
• 1/4 cup canola oil
• 3 tablespoons chopped onion
• 4 cloves garlic, minced
• 4 tablespoons balsamic vinegar

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Instructions

1. Clean mushrooms and remove stems, reserve for other use. Place caps on a plate with the gills up.
2. In a small bowl, combine the oil, onion, garlic and vinegar. Pour mixture evenly over the mushroom caps and let stand for 1 hour.
3. Grill over hot grill for 10 minutes. Serve immediately.