Preheat the oven to 180 degrees Celsius. Add gluten-free oats, cream of tartar baking powder, applesauce, cinnamon, and gluten-free oat milk (1) to a blender and blend until smooth.
Stir in blueberries.
Pour everything into a small baking dish.
Sprinkle with blueberries and bake in the preheated oven for approx. 25-30 minutes.
Note
We only use ingredients from the SIGHI list, categories 0 and 1. Please always be mindful of your individual tolerance.