How to Make It
Preheat oven to 350°F. Beat butter in a stand mixer fitted with a paddle attachment on medium speed until creamy, about 1 minute. Gradually add sugar, beating well. Add eggs 1 at a time, beating well after each addition. Add bananas; beat until smooth, about 1 minute.
Stir together flour, baking powder, baking soda, and salt in a bowl; add to butter mixture, beating on low speed until just moistened. Stir in pecans.
Pour batter into a greased and floured 9- x 5- x 3-inch loaf pan. Bake in preheated oven until a wooden pick inserted in center comes out clean, 55 minutes to 1 hour, 5 minutes. Cool in pan 10 minutes. Transfer cake to a wire rack; let cool completely, about 1 hour.