Ingredients
Equipment
Method
Prep and mix
- Preheat oven to 350°F and grease a 9x5 loaf pan, making sure the corners are coated for easy release.
- Beat softened butter and sugar until light and fluffy, using steady mixing to aerate for a tender crumb.
- Beat in eggs, vanilla extract, and the instant vanilla pudding mix until the batter looks evenly combined.
- Stir in mashed bananas and sour cream until fully incorporated, scraping the sides so no dry pudding mix remains.
- Fold in all-purpose flour, baking soda, salt, and cinnamon until just combined, stopping as soon as the flour disappears to avoid toughness.
Bake and cool
- Pour batter into the prepared pan and smooth the top so it bakes evenly.
- Bake for 60–70 minutes at 350°F until the top is deeply golden and a toothpick inserted in the center comes out clean.
- Cool for 15 minutes before unmolding, so the interior sets into a custardy, sliceable crumb.
Notes
Pro tip: use very ripe bananas (yellow with a few brown spots) and avoid overmixing after adding flour for that soft, tender bite. Store tightly wrapped at room temperature up to 3 days or refrigerated up to 5 days; freeze up to 2 months. For a lower-fat option, you can substitute low-fat sour cream (texture will be slightly less rich, but still tender).
