Classic Parisian Lemon-Zest Madeleines

Preheat oven to 350 deg F (175 deg C). Lightly grease a non-stick madeleine tin.

In a small bowl, whisk together the whey protein, almond flour, and oat flour.

Add the egg white and fold until a thick, uniform batter forms. The batter should be smooth and fragrant.

Carefully spoon the batter into the madeleine molds, filling each about three-quarters full.

Bake for 8-10 minutes, or until the edges are golden brown and the centers spring back when gently pressed with a fingertip.

Let the madeleines cool in the pan for 3 minutes before unmolding onto a wire rack. They should be delicate and light with the characteristic shell-shaped ridges.

Serve warm, perhaps with a dusting of cinnamon if desired, for an authentic Parisian tea-time experience.