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  • Peanut free
  • Sesame free
  • Soy free
  • Shellfish free
  • Seafood free
  • Vegetarian
  • High in protein
  • 1 serve veg or fruit

Soft and moist with that comforting banana flavour you know and love, this 6-minute banana mug cake is bound to be a favourite. 

  • Serves1
  • Cook time5 minutes
  • Prep time5 minutes
Banana mug cake


  • 1/4 cup (35g) self-raising flour
  • 1/2 tsp ground cinnamon
  • Pinch salt
  • 20g unsalted butter, melted
  • 1 small ripe banana, mashed
  • 1 Coles Australian Free Range egg, lightly whisked
  • 1 tbs milk
  • 3 tsp maple syrup
  • Extra maple syrup, to serve
  • Chopped toasted walnuts, to serve
  • Sliced banana, to serve
  • Ice cream or dollop cream, to serve

Nutritional information

Per serve: Energy: 1937kJ/463 Cals (22%), Protein: 12g (24%), Fat: 22g (31%), Sat Fat: 13g (54%), Sodium: 501mg (25%), Carb: 53g (17%), Sugar: 21g (23%), Dietary Fibre: 3g (10%).

Check ingredient labels to make sure they meet your specific dietary requirements and always consult a health professional before changing your diet. View dietary information here.

Percentage Daily Intake information on our recipes is calculated using the nutrition reference values for an average Australian adult.


  1. Step 1

    Grease a 1 1/4 cup (310ml) microwavable mug or cup.

  2. Step 2

    Combine the flour, cinnamon and salt in a small bowl. Add the butter, banana, egg, milk and syrup, and stir to combine.

  3. Step 3

    Pour the batter into the prepared mug. Cook on high for 1 1/2 mins (90 seconds). Carefully remove from the microwave and set aside for 1 min to cool slightly.

  4. Step 4

    To serve, drizzle with maple syrup. Sprinkle with walnuts, banana slices and serve with ice cream or cream.

Recipe tip

Clever storage:
If you can't use ripened bananas quickly enough, freeze them or use them to make banana bread.

Banana mug cake recipe

If you’re craving a slice of cake but aren’t wanting to bake a whole one, this banana mug cake is just the thing you need. A mix between banana cake and banana bread, it’s sweet, comforting, and a great way to use up any overripe bananas. Instead of sugar, maple syrup is used to sweeten the cake and add delightful hints of toffee flavour. The topping options are endless – try toasted nuts, desiccated coconut, ice cream, custard, peanut butter or chocolate sauce. Ready in just 6 minutes, it’s a go-to for a mid-afternoon snack or after-dinner treat. 

Tips for making banana cake in a mug

Here are some things to look out for when making this mug cake:

  • Go for a small egg so the cake doesn’t have too much of an egg taste.

  • Pick overripe bananas so you can easily mash them until smooth, and so the cake will have that sweet banana flavour.

  • Only fill your mug to a maximum of ⅔ full, to prevent the batter from overflowing. Place the mug on a small plate when it is in the microwave, just in case. 

  • To check that the cake is cooked, insert a skewer into the centre and make sure it comes out clean.

How to select and store bananas

It doesn’t matter what size bananas you pick at the supermarket, the main thing to remember is to always choose bananas that are turning brown or are completely brown. Your mug cake will taste the yummiest when your bananas are ripe to overripe. 

If you only have bananas that are still mostly yellow, this trick will help you ripen them in 1-2 days. All you need is a brown paper bag! Place 2 or more bananas in the bag, then fold the top of the bag to create an enclosed space. Leave this at room temperature. Check their progress every 12 hours or so.

What about frozen bananas? If you already have frozen overripe bananas in your freezer, these are great to use in this recipe. Just defrost them, mash and stir into the batter. 

Now get cooking

Follow these helpful tips for this ultimate banana cake in a mug recipe for a sweet treat that hits the spot. For other simple desserts that use bananas, try these recipes for Kim’s nan’s banana cake, choc berry and banana sheet cake, frozen choc-banana pavlova and banana and strawberry vegan nice cream.