Start by melting your butter in a microwave-safe bowl in the microwave.

Add sugars, vanilla and salt. Stir to combine.

Separate your egg and add the yolk only to your cup. Stir to combine.

Measure a slightly less than full, 1/4 cup of all-purpose flour. Add flour to the bowl, then stir again.

Add the chocolate chips, and give a final stir. Now your mixture will look like cookie dough. Add a few chocolate chips to the top of the cookie dough.

Cook in microwave 40-60 seconds.