Step 1

Preheat the oven to 425F. Line a 12-cup muffin pan with paper liners.

Step 2

In a medium bowl, whisk together the flour, baking powder, cinnamon, baking soda, and salt.

Step 3

In a large bowl, stir together the oats and milk. Let stand for 10 minutes.

Step 4

Add the brown sugar, oil, and eggs. Stir to combine. Add the flour mixture and stir together just until combined. Divide the batter among the paper liners. (You can sprinkle the tops with extra oats or coarse sugar, if desired.)

Step 5

Bake for 7 minutes. Reduce the oven temperature to 350F and continue baking for 12 to 15 minutes or until the centers are springy to the touch and the muffins are golden brown. Let the muffins cool in the pan for a few minutes. Transfer to a wire rack and let cool completely or serve warm.