This easy wholesome peanut butter mug cake recipe is simple to prepare and so delicious! Add chocolate chips and/or chopped nuts and serve it with ice cream for a decadent dessert!
Add all of the ingredients for the mug cake to a microwave-safe mug, ramekin, or measuring cup. Stir well until a smooth batter forms. Note: I like using a measuring cup for stirring and then I transfer the cake batter to a ramekin for microwaving/baking.
Microwave for 60-75 seconds (I do 65 seconds), or until the cake is fluffy and tests clean. To bake it in the oven, use an oven-safe mug or ramekin, and place it on a cookie sheet. Bake at 350 for 15-25 minutes, until cooked through. To test for doneness, you can insert a digital thermometer into the center of the mug cake. It is ready if it is 190 degrees Fahrenheit in the middle or higher.
Allow the cake to cool for a few minutes before diving in! For an extra decadent treat, serve it with a scoop of vanilla ice cream.