Red Velvet Sheet Cake with Classic Red Velvet Frosting
INGREDIENTS
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Nonstick baking spray
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2 1/2 cups cake flour
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1 teaspoon salt
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1 cup buttermilk
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1 teaspoon vanilla extract
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1 teaspoon baking soda
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2 whole eggs
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1 1/2 teaspoons vinegar
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1 1/2 teaspoons cocoa powder
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1 1/2 fluid ounces red food coloring
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1 cup shortening
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1 3/4 cup granulated sugar
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1 cup whole milk
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5 tablespoons all-purpose flour
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1 teaspoon vanilla extract
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2 sticks unsalted butter
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1 cup granulated sugar
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