In a bowl, whisk together the muggins mix and plant milk.
In a separate bowl, whisk together the pistachio cream and coconut oil.
Transfer half of the batter to a mug, add the pistachio filling, then add the rest of the batter.
Top the mug cake with extra chocolate chips, microwave for 90 seconds, and you're done!
Note: In this recipe, I made an extra-large mug cake, so I doubled the recipe listed above😊 Your mug cake might be a little smaller if you use the listed recipe!