"Add something flavorful to your dinner by grilling these hearty mushroom sandwiches - a dish that's ready in 35 minutes!..."
INGREDIENTS
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4 portabella mushroom caps (about 3/4 lb)
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1/4 cup balsamic vinegar
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2 tablespoons olive or vegetable oil
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1 teaspoon dried basil leaves
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1 teaspoon dried oregano leaves
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1 tablespoon finely chopped garlic
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1/2 teaspoon salt
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1/4 teaspoon pepper
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4 slices provolone cheese
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4 burger buns, split