Pre-heat oven to 350 and line a sheet pan with parchment.

In a large mixing bowl, beat together the softened butter, brown sugar and granulated sugar using a hand mixer.

Beat in eggs and vanilla.

Next, beat in flour, cocoa and baking soda.

Stir in oats and chocolate chips by hand.

Using a cookie scoop, arrange cookies on parchment.

Lightly grease the bottom of a glass with cooking spray and press the cookies down a little into a flat circle.

Bake for 8 - 10 minutes and transfer to rack for cooling.

Repeat previous 3 steps with remaining cookie dough.

Enjoy!