Step 1

Preheat the oven to 350°F.

Step 2

Line a baking sheet with parchment paper and set aside.

Step 3

Melt butter in a microwave-safe bowl. Add sugar and stir until combined. Add beaten egg and mix well.

Step 4

Stir in oats, flour, vanilla, salt, and baking powder. Mix until combined.

Step 5

Drop teaspoonfuls of dough onto the prepared baking sheet leaving space for the cookies to spread (we put 6 cookies on a sheet).

Step 6

Bake for 8-9 minutes, or until the edges of the cookies are browned.

Step 7

Let cool completely before removing from parchment paper.