This protein cookie skillet is the ultimate high-protein dessert recipe. Made with oat flour, Greek yogurt, nut butter, vanilla whey protein powder, and dark chocolate, this single serve skillet cookie bakes up soft, gooey, and packed with over 35g of protein!
Preheat your oven to 350 degrees F and lightly grease a small cast-iron skillet or oven-safe dish with melted coconut oil, avocado oil, or melted butter.
In a small bowl, combine the egg yolk, cashew butter, Greek yogurt, and maple syrup. Mix the wet ingredients, then stir in the dry ingredients (oat flour, protein powder, and baking powder). Mix until a runny cookie dough forms.
Stir in half of the chopped dark chocolate.
Transfer the batter to your prepared skillet and spread it evenly. Top with the remaining chocolate chunks.
Bake for 6-7 minutes, until the edges are set but the center stays soft and gooey. Let it cool slightly, then enjoy it warm!