"The complete recipe for Vanilla Sheet Cake with Malted-Milk-Chocolate Frosting on Yahoo! Shine...."
INGREDIENTS
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3 3/4 sticks unsalted butter, room temperature, plus more for pan
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3 cups all-purpose flour (spooned and leveled), plus more for pan
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1 1/2 cups sugar
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4 large eggs
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1 tablespoon baking powder
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1 teaspoon baking soda
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Fine salt
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1 1/4 cups buttermilk
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1 1/2 teaspoons pure vanilla extract
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1/4 cup unsweetened cocoa powder
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1 1/2 cups malted milk powder
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1/2 cup boiling water
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3/4 pound milk chocolate, melted and cooled
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Sprinkles (optional), for serving