INGREDIENTS
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½ cup unsalted butter, softened ¾ cup sugar 1 egg 1 tsp vanilla 2 Tbsp sour cream 2 cups flour (all purpose or white whole wheat) 1 tsp baking soda ½ tsp salt ¼ tsp cinnamon 1 cup mashed banana, about 3 small or 2 medium ¾ cup mini chocolate chi