Prep the Oven & Tin: Preheat your oven to 170°C fan and line a standard loaf tin with baking paper.
Smooth the Cottage Cheese: Add the cottage cheese to a high-speed blender or food processor and blend until smooth and creamy.
Mix the Wet Base: In a large bowl, mash the 3 ripe bananas. Whisk in the blended cottage cheese, eggs, and olive oil until uniform.
Combine Dry Ingredients: Add the flour, protein powder, oat bran, chopped pecans, baking powder, bicarbonate of soda, and salt. Fold gently until just combined to keep the loaf light. Fold in the chocolate chunks if using.
Assemble: Pour the batter into your lined loaf tin. Place the lengthways-sliced banana cut-side up on top of the batter.
Bake: Bake for 45 to 50 minutes. Check around the 40-minute mark with a wooden skewer—pull the loaf out as soon as it comes out with just a few moist crumbs.
Cool & Slice: Let the loaf rest in the tin for 10 minutes, then transfer to a wire rack to cool completely before cutting into 6 equal, thick slices.