In a 10 to 12 ounce microwave-safe mug, add the finely crushed Oreo cookie crumbs and milk. Stir to combine.
Add the mini chocolate chips and baking powder and stir again.
Microwave on high for 1 minute 45 seconds.
Allow the Oreo mug cake to cool for 30 seconds before adding the squirt of whipped cream and sprinkle of additional crushed Oreo cookie.
Notes
You can crush your cookies in a heavy-duty zip-top bag with a rolling pin for easy cleanup if you are just making a single mug cake. If you want to make a few mug cakes, you can put more cookies into a food processor to pulse them into fine crumbs. You can store a large quantity of cookie crumbs in an airtight container in the pantry for up to 2 weeks.
This delicious Oreo mug cake only makes a single serving. Double the recipe to share this rich cake with a friend. Microwave cakes one at a time if you are making more than one.
Using a wider and shorter cup works best and makes it easier to scoop out your cake.
The baking powder in this recipe is not necessary, but it does help to give the mug cake a slightly lighter texture and lift when cooked.
My microwave is 1000 watts. You should check your cook time at 1 minute 30 seconds and adjust cook time in 10 to 15 second intervals according to your microwave.
This decadent Oreo mug cake recipe should be enjoyed immediately.