Preheat and PreparePreheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line it with parchment paper for easy removal.
Mix Wet IngredientsIn a large bowl, whisk together mashed bananas, eggs, yogurt, brown sugar, maple syrup, vanilla, and olive oil until smooth and well combined.
Add Dry IngredientsIn a separate bowl, mix flour, baking soda, salt, and cinnamon. Slowly fold the dry ingredients into the wet batter. Don’t overmix—just combine until no flour streaks remain.
Optional Add-InsFold in chopped walnuts or chocolate chips if using.
Make the StreuselIn a small bowl, stir together the walnut streusel ingredients until crumbly.
Assemble and BakePour the batter into your prepared loaf pan. Sprinkle the streusel mixture evenly on top. Bake for 55–60 minutes, or until a toothpick inserted into the center comes out clean.
Cool and EnjoyLet the loaf cool in the pan for 10 minutes before transferring to a wire rack. Serve warm with a pat of butter or enjoy plain with your morning coffee!