Add oatmeal to a large mixing bowl, pour milk over and let sit for 10 minutes.
Preheat oven to 350°F. Line a 12 cup muffin pan with paper liners.
In a separate bowl, mix together flour, baking powder and salt.
After soaking the oatmeal for 10 minutes, add the brown sugar to the oats and stir to just combine.
Add flour mixture to the oats and mix until all ingredients are just incorporated together. Do not over mix
Add egg, vanilla and melted butter. Again mix until just mixed together.
Fold in chocolate chips.
Fill prepared muffin pan equally, about 2/3 full.
Bake in prepared oven for 20-25 minutes.
Cool in pan for 2-3 minutes, before transferring to wire rack to cool completely.
Store in an airtight container for up to 4 days at room temperature.
