Ingredients
Equipment
Method
Preheat and prepare pan
- Preheat the oven to 350°F and grease a 9x5 loaf pan, then dust with flour for easy release.
Cream the butter and sugar
- Beat the butter and sugar together until light and fluffy, about 3–4 minutes, then stop and scrape the bowl so the mixture stays smooth.
Mix in wet ingredients
- Add the eggs one at a time, beating after each, then mix in the vanilla and sour cream until evenly incorporated.
Add bananas
- Stir in the mashed bananas until combined, leaving no dry streaks.
Combine dry and fold walnuts
- Fold in the all-purpose flour, baking soda, and kosher salt until just combined, then fold in the chopped walnuts so the batter stays tender.
Bake and finish
- Pour the batter into the pan, press whole walnut halves down the center, and bake for 65–70 minutes until deep golden and a toothpick comes out clean.
- Cool the loaf 15 minutes before turning it out so the crust firms up and slices cleanly.
Notes
Pro tip: toast the walnuts until fragrant before chopping—then press whole halves into the center so they stay visible on the golden crust. Store wrapped at room temperature for up to 3 days or refrigerate for up to 5 days; freeze slices for up to 2 months. For a lighter option, swap in reduced-fat sour cream for part of the fat while keeping the same bake time.
