Preheat oven to 350° Fahrenheit and line a muffin pan with muffin liners.
In a large bowl, mix together the non-dairy milk, maple syrup, eggs, oil, and vanilla extract.
Add in the oat flour, chocolate protein powder, baking powder, and baking soda. Mix until everything is just combined.
Fold in the chocolate chips until evenly distributed throughout the batter.
Pour ¼ cup of batter into each individual muffin tin and bake for 20-25 minutes, or until a toothpick inserted down the center of one muffin comes out clean.
Remove muffins from oven and transfer to a wire rack to cool completely.