Preheat oven to 350°F (175°C). Grease a 9x5 inch loaf pan with butter or line with parchment paper.
Mash the bananas in a large bowl using a fork. Leave some chunks for texture if preferred.
Stir in cottage cheese, eggs, melted butter (or coconut oil), granulated sugar, brown sugar, and vanilla. Mix until combined.
In a separate bowl, mix together flour, baking soda, baking powder, salt, cinnamon, and nutmeg.
Gradually add dry ingredients to the wet mixture and stir until just combined (avoid overmixing).
Fold in any optional add-ins (walnuts, chocolate chips, or blueberries).
Pour the batter into the prepared loaf pan and smooth the top. Optionally, sprinkle some cinnamon and sugar on top.
Bake for 55-60 minutes or until a toothpick inserted comes out clean.
Let the bread cool for 10 minutes in the pan, then transfer to a wire rack to cool completely before slicing.