Preheat oven to 350 degrees fahrenheit
Mill wheat berries. Typically 1/2 cup of wheat berries = 1 cup of flour. Mill more or less to get the amount needed.
Mix your dry ingredients together in a bowl and set aside.
Add bananas to stand mixer, and mix on low until fully mashed. (Or mash by hand using a potato masher.)
Add remaining wet ingredients and mix well.
Once wet ingredients are fully incorporated, add dry ingredients and mix on low speed until fully combined.
Allow batter to rest for 30 minutes to absorb the flour.
Line loaf pan with parchment paper and then pour the batter in.
Place in the oven and bake for 35-40 minutes.
When a toothpick comes out clean, and the center is no longer jiggly, remove from oven and allow to cool for 30 minutes before removing from pan and slicing.