Step 1

Preheat your oven to 350 degrees and line two baking sheets with parchment paper or a silicone baking mat. Set aside.

Step 2

In a food processor, add the rolled oats and pulse until coarse, about 10 seconds.

Step 3

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

Step 4

In a large mixing bowl, add the butter and sugars and cream together with a hand mixer.

Step 5

One at a time, add in the eggs, mixing in between each addition. Add in the vanilla and mix.

Step 6

Gradually pour in the flour mixture while continuing to mix until well combined. The dough will be thick.

Step 7

Use a medium cookie scoop to place 12 per baking sheet, evenly spaced.

Step 8

Bake for 9-12 minutes until the edges begin to brown.

Step 9

Cool on the baking sheet for about 5 minutes before transferring to a wire rack to cool completely.

Step 10

Meanwhile, make the glaze in a shallow bowl. Add the powdered sugar and milk and whisk until smooth.

Step 11

Take a cooled cookie and quickly dip the top into the glaze and let the excess drip off. Let icing set before serving.