INGREDIENTS
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3 tablespoons lemon juice
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2 tablespoons olive oil
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1 teaspoon minced garlic
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1/4 teaspoon salt
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3/4 teaspoon coarsely ground black pepper, divided
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4 portobello mushroom caps, stems removed (about 12 ounces)
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1 cup shredded fontina cheese
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1/2 teaspoon dried oregano leaves, crushed
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4 crusty rolls or hamburger buns, split
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1 tablespoon chopped fresh basil or 1 teaspoon dried basil