Ingredients
Equipment
Method
Prep
- Preheat the oven to 350°F and grease a 9x5 loaf pan. Set the pan aside so it’s ready for batter.
Make the batter
- Beat the softened butter and sugar until light and fluffy. This helps the loaf bake with a tender, even crumb.
- Beat in the eggs, vanilla extract, and instant vanilla pudding mix. Mix until the batter looks smooth and evenly combined.
- Stir in the mashed ripe bananas and sour cream until combined. Fold just until there are no dry streaks.
- Fold in the all-purpose flour, baking soda, salt, and cinnamon until just combined. Stop mixing as soon as the flour disappears.
- Pour the batter into the prepared pan and smooth the top. Tap the pan lightly to help level the surface.
Bake and cool
- Bake at 350°F for 60–70 minutes until the top is deeply golden and a toothpick inserted in the center comes out clean. Watch for a set center and an even golden crust.
- Cool the loaf for 15 minutes before unmolding. Let it rest briefly so slices cut cleanly without crumbling.
Notes
Pro tip: mash the bananas thoroughly (a few small lumps are fine) so the custardy interior stays consistent slice to slice. Store airtight at room temperature up to 3 days or in the fridge up to 5 days; freeze sliced for up to 2 months. For a dairy swap, use plain Greek yogurt in place of sour cream for a similar tang and moisture.
