INGREDIENTS
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1 1/2 cups (3 sticks) butter, room temperature
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1 cup smooth peanut butter (I used JIF), divided
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2 3/4 cups sugar
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5 eggs
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2 teaspoons vanilla
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3 cups all-purpose flour
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1 teaspoon salt
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2 large bananas, mashed
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1 cup Nutella, divided
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2 tablespoons milk or water (optional)