Preheat and prep: Heat oven to 350°F (175°C). Lightly grease a small oven-safe bowl or ramekin (12–16 oz) or use a mini baking dish.
Blend the base: In a blender or bowl, combine 1/2 cup rolled oats, 1 scoop (25–30g) protein powder, 1/4 cup egg whites, 1/4 cup nonfat Greek yogurt, 1/4 cup almond milk, 1/2 tsp baking powder, 1/2 tsp vanilla, and a pinch of salt.
Blend or whisk until smooth and thick.
Adjust sweetness: Taste the batter. If needed, add a touch of stevia or 1–2 tsp maple syrup. For a cookie vibe, a pinch of cinnamon works well.
Stir in chips: Fold in 1 tablespoon mini dark chocolate chips, reserving a few for the top.
Pour and top: Pour batter into your dish.
Sprinkle the remaining chips over the surface for that bakery look.
Bake: Bake for 18–22 minutes, until the center is just set and the edges pull slightly from the sides. Do not overbake if you want a gooey middle.
Rest and enjoy: Let it sit 3–5 minutes. Serve warm as is, or add a spoonful of Greek yogurt on top for extra creaminess.