Can I use Greek yogurt?
Yes. Greek yogurt works great here. Because it is thicker, your batter may look a little stiffer, but it bakes up moist. If it seems very thick, loosen it with 1 to 2 tablespoons of milk.
What kind of yogurt is best?
Plain yogurt is ideal. Full-fat gives the richest texture, but low-fat also works. If using vanilla yogurt, reduce the vanilla extract slightly and expect a sweeter loaf.
My banana loaf is browning too fast. What should I do?
At about the 35 to 40 minute mark, if the top is getting very dark but the center is not done, loosely tent the loaf with foil and keep baking until a tester comes out mostly clean.
Why did my loaf sink in the middle?
Usually it is one of three things: the loaf was underbaked, the baking soda was old, or the batter was overmixed. Bake until the center is set and the loaf hits around 200°F if you have a thermometer.
Can I add mix-ins?
Absolutely. Fold in up to 3/4 cup chocolate chips, chopped walnuts, pecans, or blueberries. Tossing chocolate chips (or blueberries) with a teaspoon of flour can help them stay suspended, but it is not a guarantee. If using blueberries, fold gently so you do not turn the batter gray-purple, and expect the bake time to run a few minutes longer.
Can I bake this in an 8.5x4.5-inch loaf pan?
Yes, but it will be taller and may need a little more time. Start checking at 55 minutes and be ready for 60 to 70 minutes total. If the top darkens early, tent with foil.