"Chocolate banana snack cake recipe: makes a moist snack cake!..."
INGREDIENTS
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1/2 cup unsalted butter, softened
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1 cup granulated sugar
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1 large egg
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1 teaspoon vanilla extract
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3 medium bananas, mashed (about 2 cups)
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1 1/2 cups all-purpose flour
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1 teaspoon baking powder
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1 teaspoon baking soda
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1/2 teaspoon kosher salt
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1/2 cup unsweetened baking cocoa
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1/2 batch cream cheese frosting (see notes below)
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1/4 cup walnuts (optional)