Preheat your oven to 350 degrees and line a cookie sheet with parchment paper or a silicone liner. Butter the pan (I use the wrapper from the sticks of butter I'm using) to help the cookies to spread. Set aside.

Add the oats to a food processor and pulse until they're partially ground - not to the point of a powder, you want some texture. Pour into a large bowl.

Add in the flour, baking powder, baking soda, cinnamon, nutmeg, and salt and mix. Set aside.

In another large bowl, add the melted butter, sugar, and brown sugar and beat together.

One at a time, add in the eggs, mixing well between each addition.

Pour the dry ingredients into the wet ingredients and stir until fully combined.

Use a cookie scoop to drop the dough onto your prepared cookie sheets. I did 9 per sheet - remember you want them to spread, but you don't want them to merge together.

Bake for 7 minutes, rotate the pan, then bake another 7 minutes or until edges are lightly browned.

Remove from oven and let cool on the pan for 5 minutes.