"This delicious tomato pie is a favorite at Mary Mac's Tea Room in Atlanta...."
INGREDIENTS
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2 tablespoons olive oil
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2 medium sweet onions (thinly sliced)
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salt and freshly ground black pepper
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1 box of Ritz crackers
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2 28 ounce cans diced tomatoes (undrained)
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2 cups mayonnaise
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1 1/2 cups grated extra sharp Cheddar cheese
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1 cup grated Parmesan cheese
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3 tablespoons chopped fresh basil
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Butter for greasing