Ingredients:
2 cups all-purpose flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1/2 cup unsalted butter, softened
1 cup granulated sugar
2 large eggs, room temperature
1 teaspoon vanilla extract
3 ripe bananas, mashed
1/2 cup sour cream or yogurt
