Step 1

In a microwave safe mug, use a fork to stir together the oil and sugar until well combined.

Step 2

Add the baking soda and salt and stir again.

Step 3

Add the vanilla and yolk and stir again.

Step 4

Add the flour and chips and stir a final time.

Step 5

Place the mug in the microwave and microwave on high for 45 seconds to one minute, depending on your microwave and how gooey you like your cookies.

Step 6

The cake is done when it is puffy and still slightly wet in the center.

Step 7

Let cool a few minutes (the puffiness may recede - don't worry) and serve with a scoop of vanilla ice cream