Homemade Black Bean Veggie Burgers

Ingredients

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• 4 portobello mushroom caps
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• ¼ cup balsamic vinegar
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• 2 tablespoons olive oil
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• 1 tablespoon minced garlic
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• 1 teaspoon dried basil
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• 1 teaspoon dried oregano
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• salt and pepper to taste
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• 4 (1 ounce) slices provolone cheese
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Instructions

1. 1
   Gather all ingredients.
2. 2
   Place mushroom caps, smooth side up, in a shallow dish.
3. 3
   Whisk together balsamic, oil, garlic, basil, and oregano in a small bowl. Season with salt and pepper.
4. 4
   Pour vinaigrette over mushrooms. Let stand at room temperature for 15 minutes or so, turning twice. Preheat grill for medium-high heat.
5. 5
   Brush grill grates with oil. Place mushrooms on grill, reserving marinade for basting.
6. 6
   Grill until just tender, 5 to 8 minutes per side, brushing with marinade frequently.
7. 7
   Top mushrooms with cheese.
8. 8
   Continue grilling until cheese is melted, about 2 minutes.
9. 9
   Serve and enjoy with your choice of toppings.