Preheat your oven to 400 F (200 C).
Line a 12-cup muffin tin with paper liners.
In a large bowl, mix together the rolled oats and milk. Let sit for a few minutes.
Add maple syrup, neutral oil, light brown sugar, and beaten eggs to the oat mixture. Stir until combined, then fold in flour, baking powder, cinnamon, baking soda, and salt.
Divide the batter among the muffin cups and sprinkle with sugar if desired.
Bake for 18-25 minutes or until they spring back when pressed. Cool in the tin for 5 minutes before transferring to a wire rack.