"This Peanut Butter Sheet Cake is an unbelievably moist, rich, peanut butter cake with creamy peanut butter frosting poured on top while warm!..."
INGREDIENTS
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3/4 cup unsalted butter
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6 Tbsp buttermilk
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1/2 cup peanut butter
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3 1/2 cups powdered sugar
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1 Tbsp vanilla extract
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1/4 cup peanut butter
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1 cup water
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1/2 cup unsalted butter
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1 cup granulated sugar
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1 cup light brown sugar, packed
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2 cups all-purpose flour
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1 tsp kosher salt
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1 tsp baking soda
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2 large eggs
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1/2 cup buttermilk
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1 tsp vanilla extract