Line a deeper baking tray with parchment paper. Or, you can also use silicone ice cube trays, and don't add any parchment paper.
In a blender add yogurt, protein, honey and raspberries and blend until nice and creamy. Pour it into the tray/ice cube trays, sprinkle with oat flakes and and raspberries and place in the freezer for at least 2 hours before serving.