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5 from 6 votes

Chocolate Chip Banana Mug Cake

Chocolate chip banana mug cake bakes in the microwave in exactly 90 seconds. Warm, light and fluffy mug cake with gooey melted chocolate chips and crunchy walnuts will satisfy any craving!
Course: Snack
Cuisine: American
Keyword: banana mug cake, banana mug cake recipe, chocolate chip banana mug cake, chocolate chip mug cake, eggless banana mug cake
Servings: 1
Author: Maria Doss



  • Place butter in a large microwave safe coffee mug. Microwave until just melted (don't let get very hot) about 30- 60 seconds. (Room temperature butter melts in about 30 seconds whereas cold butter takes a bit longer)
  • Remove mug from microwave and stir in mashed bananas and sugar.
    Add flour, baking powder and ground cinnamon. Stir well, until well combined. Then stir in 1 tablespoon each of chocolate chips and chopped walnuts. Sprinkle few chocolate chips and chopped walnuts on top.
  • Microwave (on high) for 90 seconds for a wide mug (as shown in the picture) or 95 seconds for a tall, narrow mug. Do not cook longer! Do not open the microwave during the cooking time!
  • Remove from microwave, cool for a few seconds before digging in.

Optional toppings

  • You could top warm mug cake with Nutella / whipped cream / sliced bananas / toasted nuts / a pinch of sea salt.


Sugar - 1 and 1/2 tablespoons sugar is good when combined with the chocolate chips without making it too sweet. However, if you are skipping chocolate chips then please use 2 tablespoons sugar instead. 
Mashed banana – You will need about 1/2 of medium banana. Use a well ripened banana that is too soft for eating is great for this.
Butter – Salted or unsalted butter both will work here. Also, it is better to use room temperature butter, since it melts quicker without making the mug too hot. But, cold butter will work just as fine.
Walnuts – Chopped toasted pecans will be a great substitute as well.
Chocolate Chips – I used semi sweet chocolate chips. Bittersweet or unsweetened chocolate chips will compliment as well. Try staying away from milk chocolate chips since it might result in a much sweeter chocolate chip mug cake.