"Martha Stewart's Slow Cooker Three Cheese Macaroni and Cheese is creamy and delicious. My son declared it the best mac and cheese...."
INGREDIENTS
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2 tablespoons butter
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1/2 onion, diced
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1 1/2 cups grated Colby jack cheese
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1 1/2 cups grated white cheddar cheese
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1 cup grated Gruyere cheese
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12 ounces macaroni, uncooked ( use gluten free pasta for gluten free version)
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2 cups milk
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2- 12 ounce cans evaporated milk
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1 teaspoon Dijon mustard
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1 teaspoon salt
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1/4 teasoon pepper