Step 1

Preheat the oven to 350 F and grease a 9x5-inch loaf pan with nonstick spray.

Step 2

Melt the butter in a frying pan on medium-low, then continue to cook, stirring occasionally, for about 5 minutes, or until the butter becomes brown in color and smells nutty. Remove it from heat at that point.

Step 3

Combine the flour, baking soda, salt, cinnamon, and nutmeg in a bowl.

Step 4

Mix the sugar with the browned butter.

Step 5

Beat the eggs, sour cream, bananas, and vanilla into the butter/sugar mixture.

Step 6

Beat the wet ingredients together with the dry ones until just combined.

Step 7

Pour the batter into the prepared loaf pan and bake for 55 to 60 minutes, or until a toothpick inserted into the center of the loaf comes out clean.

Step 8

Let the banana bread cool before slicing.