Pre-heat your oven to 350℉ and line your baking sheets with parchment paper.
In a large bowl add your butter and cookie butter and heat in the microwave for about 20-30 seconds. (Not fully melted but warm) Stir until combined.
Add your sugar and brown sugar and stir again, until combined.
Next, add your egg, egg yolk and vanilla extract and mix it up until light and fluffy.
Add your dry ingredients which includes your cornstarch, baking soda, salt, cinnamon, and flour. Mix until just incorporated.
Swirl in a few additional tbsp of cookie butter. Scoop your cookie dough into 1-2 inch balls and place on your baking sheets lined with parchment paper, a few inches apart
Bake in the oven at 350℉ for 8-10 minutes. Remove from oven.
Using a round cookie cutter, scoot the edges of your cookies to make them all round. (This step is optional.)
Let cool. Drizzle with more cookie butter, if you'd like.
Share and ENJOY!!