Prepare the pan: Preheat the oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line it with parchment paper.
Mix the dry ingredients: In a large bowl, whisk together the flour, baking powder, baking soda, cinnamon, and salt.
Mix the wet ingredients: In a separate bowl, mash the bananas with a fork until mostly smooth. Add the eggs and whisk until combined. Stir in the cottage cheese, maple syrup, and vanilla extract until fully incorporated.
Combine the batter: Add the dry ingredients to the wet mixture and stir just until combined. Do not overmix. Fold in the chopped walnuts.
Bake: Pour the batter into the prepared loaf pan and smooth the top. Bake for 35–45 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Cool: Let the banana bread cool in the pan for 15 minutes, then transfer to a wire rack to cool completely.
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Notes
Bananas: The riper the bananas, the sweeter and more flavorful the bread will be. Overripe bananas with brown spots work best.
Cottage cheese: Full-fat cottage cheese gives the best texture and moisture. Small-curd cottage cheese works especially well.
Flour options: You can use all-purpose flour, whole wheat flour, or spelt flour. Since different cottage cheese brands vary in moisture, you may need to add an extra 2–4 tablespoons of flour if the batter looks too wet.
Gluten-free version: Use a 1:1 gluten-free flour blend designed for baking.
For a smoother texture: Blend the cottage cheese before adding it to the batter for a smoother, lump-free banana bread.
Control the sweetness: This banana bread is not overly sweet and relies mostly on the natural sweetness of ripe bananas. For a sweeter loaf, add a bit more maple syrup or use white or brown sugar instead, which will also give the bread a softer, more moist texture.
Mix-ins: You can replace the walnuts with pecans, chocolate chips, blueberries, or raisins.