"Hostess Sheet Cake with that iconic chocolate frosting and white swirly frosting. Make Hostess Sheet Cake in a 9x13 cake pan!..."
INGREDIENTS
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1 box (15.25 oz) chocolate cake mix
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3 large eggs
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1 cup whole milk
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1/2 cup vegetable oil
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1 teaspoon vanilla extract
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1 jar (13 oz) marshmallow fluff
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1 cup (2 sticks) butter (well softened)
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3 cups powdered sugar
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1/4 cup heavy cream
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2 teaspoons vanilla extract
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¼ teaspoon kosher salt or sea salt
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1 cup heavy cream
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1 bag (12 oz) semi-sweet chocolate chips
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2 tablespoons butter (well softened)
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1 teaspoon vanilla extract