Ingredients:
2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1/2 cup unsalted butter, softened
1 cup granulated sugar
2 large eggs
1 teaspoon vanilla extract
4 ripe bananas, mashed (about 1 1/2 cups)
1/2 cup plain yogurt or sour cream (or use buttermilk)
Optional Add-ins:
1/2 cup chopped walnuts or pecans
1/2 cup chocolate chips
