Step 1: Preheat & Prep
Preheat oven to 325°F (convection) or 350°F (conventional)
Line or grease an 8" round or square pan
Step 2: Make Batter
In a large bowl, whisk together almond flour, coconut flour, whey protein, baking powder, baking soda, and salt.
In another bowl, whisk eggs, melted butter, almond milk, sweetener, vanilla, and peppermint extract.
Add wet to dry and stir just until combined. Let sit 2–3 minutes to hydrate.
Step 3: Create Swirl
In a small bowl, mix cocoa, melted butter, sweetener, and peppermint extract.
Spoon half the cake batter into pan.
Drizzle the cocoa swirl and lightly marble with a knife or skewer.
Add remaining batter and smooth the top.
Step 4: Bake
Bake 35–40 minutes, until golden on top and a tester comes out clean.
Cool at least 20 minutes in pan before removing or glazing.
Step 5: Glaze (Optional)
Mix confectioners sweetener with almond milk and peppermint extract.
Drizzle over cooled cake.
Garnish with crushed peppermint candies, shaved dark chocolate, or cocoa nibs.