Combine all the ingredients in a 10 oz. microwave resistant mug. Mix until smooth and microwave for 1 minute at 1,000 watts.
Let cool for 1-2 minutes, top with freshly sliced strawberries, and enjoy.
Notes
With Dairy - Don't want to make this mug cake dairy free? You can substitute the coconut oil for butter. The dairy free creamer for half and half and the water for milk. I have tested this and it tastes just as good (just richer and more calories).
Less Chocolate - If you want less of the pungent dark cocoa flavor you can use only 2 tablespoons cocoa powder.
Chocolate Lava Cake - Cook for only 45 seconds and you'll get the results of a lava cake with a soft center! Since their are no eggs in this recipe it's okay to eat this not fully cooked through.
Entertaining with Mug Cakes - Instead of cooking in a coffee mug I cook them in little ramekins that make them look like little cakes. You can carefully remove the chocolate cake from the ramekin and plate with fresh strawberries or you can serve as is with a little strawberries on top. Of course, if you don't own little ramekins you can always serve your guest the cake in a mug. Once they have their first bite they will forget they are eating out of a coffee mug.