Step 1

Begin by melting butter in the microwave. This usually takes about 30-45 seconds. Stir in brown sugar and granulated sugar, mix until combined.

Step 2

Add in egg yolk, vanilla extract, peanut butter and milk and mix until combined.

Step 3

Next fold in the flour and then the chocolate chips.

Step 4

Place cookie in the microwave and cook for 45 seconds to a minute on full power. If cookie still looks too runny or undercooked let it go a bit longer. Keep in mind the cookie will continue to cook as it cools. Take cookie out of the microwave and let sit for 2 minutes then serve!