If your Pioneer Woman Banana Nut Bread sinks in the middle as it cools, it is likely because the bread wasn’t fully cooked through. Banana bread forms a nice, dark crust on the outside, which appears to be “done” even if the inside is still slightly raw. Before removing the bread from the oven, insert a toothpick deep into the center of the bread. If the toothpick comes out wet, return the bread to the oven to finish baking.