Jake and Maggie Gyllenhaal’s Banana Bread
Published March 12, 2026

- Total Time
- 2 hours
- Prep Time
- 10 minutes
- Cook Time
- 1 hour 50 minutes
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Ingredients
- ½ cup/113 grams unsalted butter, softened, plus more for greasing the pan
- 1½ cups/192 grams all-purpose flour
- 2½ teaspoons baking soda
- ½ teaspoon fine salt
- ⅔ cup/134 grams sugar, plus more for sprinkling
- 2large eggs
- 1teaspoon vanilla extract
- 1¼ cups/280 grams mashed ripe banana (from 2 ½ large)
- ½ cup/110 grams sour cream
- 1cup/100 grams chopped toasted walnuts and pecans
Preparation
- Step 1
Heat the oven to 350 degrees. Grease a 9-by-5-by-3-inch loaf pan.
- Step 2
In a small bowl, whisk together the flour, baking soda and salt.
- Step 3
In a large bowl, using a hand-held electric mixer on medium-high speed (or by hand with a spatula or wooden spoon), beat the butter and sugar until smooth and creamy, about 1½ minutes, stopping and scraping the sides of the bowl as needed. Beat in the eggs, one at a time, then the vanilla. Beat in the banana and sour cream until well blended.
- Step 4
Add the flour mixture to the wet ingredients. Beat on low just until blended, scraping the side of the bowl as necessary, then stir in the nuts.
- Step 5
Transfer the batter to the prepared pan; sprinkle the top lightly with sugar. Bake 55 to 65 minutes, until a toothpick inserted into the center comes out clean.
- Step 6
Let the bread cool slightly in the pan, then loosen and remove from the pan and transfer to a wire rack to cool. Let cool thoroughly before serving. Wrap leftover banana bread in foil and store at room temperature for up to 4 days.
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