4medium(360–400 g) very ripe bananas, mashed (mashed)
½cup(120 g) buttermilk or kefir
12tbsp(170 g) unsalted butter, melted (¾ cup)
½cup(60 g) pure maple syrup
1tbsp(15 g) lemon juice
1tsp(5 g) vanilla extract
Fold-Ins
1cup(150 g) finely diced strawberries or 1 cup whole blueberries
Instructions
Mill & Autolyse
Mill the wheat berries. In a large bowl, combine the flour, mashed bananas, and buttermilk or kefir until no dry flour remains. Cover and rest 20–30 minutes to soften the bran and ensure a tender crumb.
Prepare Pan & Oven
Preheat oven to 350°F (175°C). Grease and line your chosen pan with parchment.
Add Wet Ingredients
Stir in the melted butter, lemon juice, vanilla, and maple syrup until smooth and fully incorporated.
Add Dry Ingredients
Sprinkle the salt, baking powder, and baking soda evenly over the batter. Gently fold just until combined. Do not overmix.
Fold in Fruit
Toss berries with 1–2 teaspoons flour if desired, then gently fold into the batter.
Bake
Pour batter into prepared pan and smooth the top.
8-inch round: 32–38 minutes
Two 6-inch rounds: 28–34 minutes
9 × 11-inch sheet pan: 28–35 minutes
Cake is done when the center springs back lightly and a toothpick comes out with moist crumbs.
Cool
Cool in pan for 10 minutes, then transfer to a wire rack to cool completely.
Notes
Do not overbake. Naturally sweet cakes set quickly and stay soft when baked just until done.
Butter provides richness and moisture in the absence of refined sugar and works especially well with fresh-milled flour.
Flavor improves after resting, making this cake perfect to bake a day ahead.
Sourdough Option: For a lightly fermented version, add ½ cup (120 g) sourdough discard during the autolyse step and reduce the buttermilk or kefir to ¼ cup (60 g).