Step 1

Heat oven to 375 degrees F (190 degrees C). Line a medium sized baking sheet with a silicone baking liner or parchment paper.

Step 2

In a medium sized mixing bowl, cream together 2 1/2 tablespoons of the sugar, the brown sugar, peanut butter, butter, and egg yolk until well combined.

Step 3

Add flour, baking soda, and baking powder and mix until combined. (The dough will be crumbly at first, continue mixing until the dough comes together).

Step 4

Scoop dough out with a tablespoon or a cookie scoop and shape into balls. Place on baking sheet and space them 2-inches apart.

Step 5

Pour the remaining sugar in a bowl. Dip a fork into the sugar, then flatten each cookie slightly with the sugar coated fork. Then, turn fork in the opposite direction and flatten just slightly again creating a criss-cross pattern.

Step 6

Bake for 8-10 minutes.

Step 7

Let cookies cool on the baking sheet for 5 minutes then transfer to a wire rack to cool completely.