Preheat oven to 350°F (175°C). Line a small springform pan with parchment paper.
In a bowl, blend cottage cheese, egg yolks, honey, vanilla, orange zest, and orange juice until smooth. Stir in oat flour, baking powder, and salt.
In a separate bowl, beat egg whites until stiff peaks form. Gently fold them into the batter to keep it airy.
Pour the mixture into the prepared pan. Bake for 30–35 minutes until puffed, golden, and set in the center.
Let it cool before slicing. Enjoy as a light, fluffy, citrusy, protein-packed cake.
