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
- Rating
- Comments
- Read comments
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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.
Private Notes
Comments
Made it. With greek yogurt instead of sour cream. Subbed whole wheat for half the flour and used half fresh and half frozen bananas. OMG SO GOOD. Love it. Can’t stop eating it.
I make a similar banana bread and use 1/2 AP and 1/2 WW flour. I top with a fabulous toffee, praline and cinnamon crunch topping. My tip with using WW flour (or any flour) is to let the batter rest 15 minutes before baking. The flour needs a bit of time to absorb the moisture. This rest helps the bread to rise better too.
add a little shredded dark chocolate. Not chocolate chips, but a solid bar that you grate into the batter before adding nuts
Subbed ww pastry flour for ap, peanut butter for butter, soft tofu w lemon juice for sour cream, date paste for sugar, and peanuts for walnuts. Just call me the Pagan Vegan!
The Gyllenhaal siblings make their banana bread "All Too Well."
For added deliciousness, add a handful of chopped dried apricots
