1. 1. Preheat Your Oven and Prepare Your Dish: Start by preheating your oven to 375 F (190 C). Lightly grease an 8×8 inch baking dish or 4 individual oven-safe ramekins with a little cooking spray or butter. This prevents sticking and ensures easy serving.

2. 2. Combine Dry Ingredients: In a medium-sized mixing bowl, combine the rolled oats, protein powder, baking powder, and a pinch of salt. Whisk these together thoroughly to ensure the baking powder and protein powder are evenly distributed. This prevents any clumps in your final bake.

3. 3. Mix Wet Ingredients: In a separate bowl, whisk together the milk, skyr, vanilla extract, and maple syrup (if using). Make sure the skyr is well incorporated and there are no large lumps.

4. 4. Combine Wet and Dry Mixtures: Pour the wet ingredient mixture into the bowl with the dry ingredients. Stir everything together until just combined. Be careful not to overmix; a few lumps are fine. The mixture will look a bit liquidy, but the oats will absorb the moisture as it bakes.

5. 5. Add Chocolate and Raspberries: Gently fold in most of the dark chocolate chips and about two-thirds of the raspberries into the oat mixture. Reserve some chocolate chips and raspberries for topping. This ensures you get a burst of flavor in every bite and a pretty presentation.

6. 6. Transfer and Top: Pour the mixture into your prepared baking dish or divide it evenly among the ramekins. Sprinkle the remaining dark chocolate chips and raspberries over the top. This creates a beautiful visual and ensures those toppings get perfectly melty and slightly caramelized.

7. 7. Bake Until Golden: Place the dish in the preheated oven and bake for 20-25 minutes, or until the top is golden brown and the oats are set. The center should be mostly firm when gently pressed. If using individual ramekins, they might bake a little faster, so check them around the 18-minute mark.

8. 8. Cool Slightly and Serve: Once baked, remove the dish from the oven and let it cool for 5-10 minutes before serving. This allows the bake to set further and makes it easier to scoop. Enjoy it warm!