Ingredients
Method
- Preheat oven to 350°F (175°C). Spray a 9×5-inch loaf pan with nonstick spray or line with parchment paper for easy removal.
- If using nuts, toast 1/2–3/4 cup chopped pecans or walnuts on a baking sheet for 5–7 minutes until fragrant. Let cool.
- In a large bowl, beat the softened butter until smooth. Add brown and granulated sugars and cream together for 2 minutes until fluffy.
- Beat in eggs and vanilla extract until well combined, scraping down the bowl as needed.
- Mash ripe bananas with a fork or masher (should yield about 1 cup). Add to the butter mixture and stir until incorporated.
- Add flour and oat flour to the bowl but do not stir yet. Sprinkle baking soda, baking powder, salt, and optional spices over the top of the flour mixture.
- Stir gently until everything is combined, scraping down the bowl to incorporate all dry ingredients.
- Fold in sour cream until just mixed. If desired, fold in toasted nuts (reserving some to sprinkle on top before baking).
- Pour the batter into the prepared pan and smooth the top. Bake for 55–65 minutes, or until a toothpick inserted into the center comes out clean with moist crumbs.
- Cool in the pan for 20 minutes, then lift onto a cooling rack. Slice once cooled slightly and serve warm with butter.
- Store covered at room temperature for up to 2 days, or refrigerate/freeze for longer storage. Toast thawed slices to refresh.
Notes
Blending oats into flour adds a subtle nutty flavor and extra moisture. Use very ripe bananas (deeply speckled or blackened) for the sweetest flavor.
