Step 2
Whisk liquid ingredients—including carrot and banana—in a separate bowl. Pour wet into dry, and stir to form a batter. Smooth into prepared pan. Bake on the center rack 37 minutes, then do not open the oven door at all but turn off the heat and let sit in the closed oven 10 additional minutes. If still undercooked at this time, simply turn the oven back on and continue baking—checking every 5 minutes–until a toothpick inserted into the center comes out mostly clean.