To begin, preheat your oven to 350 and line a 9x9 pan with parchment paper (or spray with non-stick spray).
In a small mixing bowl, add your dry ingredients (oats, baking powder, cinnamon and salt) and stir together till combined.
In a large mixing bowl, add your coconut oil, maple syrup and peanut butter and whisk together till smooth. Add your vanilla and eggs and whisk again till the eggs have been well incorporated. Finally, add your milk and whisk till you well combined.
Pour your dry ingredients into your wet ingredients and stir together. Pour into your pan, evenly covering the bottom. Bake in the oven for 25-30 minutes, or till the top is set.
Let cool, then cut into 12 servings and devour!
Stored in an airtight container in the fridge this lasts about a week.