Grilled Portobello with Basil Mayonnaise Sandwich Recipe
"Grilled portobello mushrooms make for a meaty sandwich without the meat!..."
INGREDIENTS
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1/3 cup balsamic vinegar
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1/4 cup olive oil
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1 tablespoon minced garlic
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6 portobello mushroom caps
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1/2 cup mayonnaise
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1 tablespoon Dijon mustard
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1 teaspoon lemon juice
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2 tablespoons chopped fresh basil
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6 kaiser rolls, split, toasted
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1 tablespoon butter
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6 leaves lettuce
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6 tomato slices
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