INGREDIENTS
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Marinade
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1 cup balsamic vinegar
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2 tablespoons olive oil
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1 teaspoon dried basil
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1/4 teaspoon kosher salt
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1/4 teaspoon freshly ground black pepper
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2 garlic cloves, minced
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.
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6 portobello mushroom caps
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.
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Caramelized Onions
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1 tablespoon olive oil
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1-1/2 cups sliced onion
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Aioli
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1/2 cup low-fat mayonnaise
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2 teaspoon bottled minced roasted garlic
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Burgers
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Cooking Spray
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6 Brioche rolls or quality hamburger buns
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6 curly leaf lettuce leaves
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6 large (1/3-inch thick) slices tomato