Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.

In a large mixing bowl, cream together the softened unsalted butter, light brown sugar, and granulated sugar for 1-2 minutes.

Mix in the room temperature egg yolks and vanilla extract until well combined and fluffy.

Add creamy peanut butter and mix until everything is smooth and combined.

In a separate bowl, whisk together all-purpose flour, baking soda, baking powder, and salt. Gradually fold the dry mixture into the wet ingredients until just combined.

Form dough balls about 1-2 inches in size and place them onto the prepared baking sheets, leaving space between each ball.

Bake for 10-11 minutes, checking for a puffed shape and slight browning at the edges.

After baking, let the cookies cool on the baking sheets for about 5 minutes before transferring to a wire rack.