Grilled Portabella Mushroom Burgers - a La Dave

My own recipe taken from watching many, many food shows. I use it as a lower fat and calorie burger substitute.

• Ready In: 15 mins
• Serves: 4

Ingredients

• 4  large portabella mushrooms
• 1⁄4 teaspoon salt
• 1⁄4 teaspoon pepper
• 1⁄4 teaspoon garlic powder
• 2  tablespoons  balsamic vinegar
• 4  tablespoons extra virgin olive oil, divided
• 4  hamburger buns

Directions

1. Clean mushrooms by rubbing lightly with a damp towel and remove stems (if desired).
2. Combine salt, pepper, garlic powder, vinegar and 3 tablespoons oil in a small bowl and combine by whisking briskly with a basting brush.
3. Heat a medium-size skillet to medium heat and coat with remaining tablespoon of oil (if desired).
4. Brush both sides of the mushrooms with the oil/vinegar mixture and place stem side down in the skillet for 5 minutes.
5. Brush the top side of the mushrooms with some more of the mixture and turn over.
6. Grill for another 5 minutes, brushing the stem side once with the oil/vinegar mixture.
7. Remove from the skillet, place on the hamburger rolls and garnish with your favorite condiments.