INGREDIENTS
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2 tablespoons olive oil
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2 tablespoons balsamic vinegar
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4 ripe tomatoes, sliced
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3 tablespoons mayonnaise
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1/2 teaspoon dried parsley
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1/4 teaspoon dried oregano
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1/4 teaspoon black pepper
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3 tablespoons grated Parmesan cheese, divided
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4 slices bread, lightly toasted