Preheat your oven to 350°F and lightly grease a small oven-safe ramekin or mini loaf pan.
In a medium mixing bowl, mash the half banana with a fork until it reaches a smooth consistency.
Whisk in the farmers cheese, egg, honey, and vanilla extract until the wet ingredients are thoroughly combined.
Add the oat flour, cinnamon, baking powder, and sea salt to the bowl, stirring until the batter is uniform.
Roughly chop the walnuts and fold them into the mixture.
Transfer the batter into the prepared baking dish and smooth the top with a spatula.
Bake for 25 to 30 minutes or until the bread is firm to the touch and the edges are golden brown.
Remove from the oven and let the bread cool for at least 5 minutes to allow the structure to set before enjoying.