Home » Blog » Biscoff Mug Cake

Biscoff Mug Cake

This post may contain affiliate links. Read my disclosure policy.

This Biscoff mug cake recipe is a deliciously easy microwave recipe which means you can have an indulgent dessert in just a few minutes.

Biscoff mug cake in mug topped with ice cream and biscoff spread.


  • Easiest dessert to make with only a few ingredients
  • Made in the microwave so no need to turn on the oven
  • A single serving dessert so need to make more than you need
  • Great dessert for cookie spread lovers
  • Have an indulgent quick dessert in just a few minutes
  • Perfect treat to satisfy your sweet tooth


Biscoff is a cookie spread made from speculoos cookies. The spread is sometimes called lotus biscoff or cookie butter, it’s a peanut butter-like spread. It has a spiced caramel flavour. The spread comes both in a crunchy version or a smooth version. The smooth version is best for this recipe.

What is a microwave mug cake?

Microwave mug cakes are cakes that are usually a single serving. They’re made in a mug, then microwaved in the same mug and eaten. This kind of cake is ideal for when those cake cravings strike. You can make them in so many flavor variations.


Full instructions and recipe amounts are in the recipe card below.

Ingredients of biscoff mug cake in bowls.

Vegetable oil – neutral flavor

Biscoff spread – smooth works best here

Flour – all purpose flour / plain flour

Brown Sugar – adds to the caramel flavor

Milk – use plant based to make this vegan

Baking powder – just a little to help it rise and stay fluffy.

Optional extras

Lotus Biscoff spread – add a tablespoon of Biscoff to the top of the cooked cake for some extra biscoffy flavor

Lotus Biscoff Biscuits – add crushed Biscoff cookies to the top of the cake

Cream or ice cream – a little bit is all you need


  • Microwave-safe mug
  • Spoon / fork / mini whisk
  • Microwave


Start by placing your butter and Biscoff cookie butter in a small microwave safe small bowl or microwave safe large mug.

Place in the microwave for 15-30 seconds until the butter and Biscoff is melted.

Add in the brown sugar, flour and baking powder and milk and mix well until the cake batter just comes together.

Wet ingredients in a mug for biscoff microwave cake.
Mixing the dry ingredients into biscoff mug cake.

Place in the microwave for 30-60 seconds. Microwave cooking time will depend on the speed and power of your microwave, start checking at 30 seconds, if the cake is done it should look and feel spongey and not squishy.

Biscoff mug cake after microwaving.
Spoon out of biscoff mug cake.

Remove from the microwave and cool. Spoon on some extra Biscoff spread, crushed Biscoff cookies and some cream if you like.

Biscoff mug cake with spoon to the left and cookies to the right.

Tips for this microwave mug cake

  • Use a microwave safe bowl or mug that is large enough to hold the batter with enough space for it to rise.
  • Don’t over mix the batter.
  • Check the cake after 30 seconds and then at 10 second intervals to make sure it doesn’t over cook. The timing will depend on the wattage of your microwave.

Substitutions and Variations

  • Add in some white or milk chocolate chips to the batter.
  • Swirl some extra Biscoff through the batter before micriwaving.
  • Top with some caster or raw sugar for a crunchy top.
  • Swirl some crushed Biscoff cookies through the cake batter before microwaving.

Other topping ideas for this easy Biscoff mug cake

  • Biscoff Buttercream
  • Scoop of vanilla ice cream
  • Biscoff cream cheese frosting
  • Cream cheese frosting
  • Just cream
  • Biscoff spread
  • Melted white chocolate

Troubleshooting your Biscoff mug cake recipe

My cake spilled over the sides of the mug.

Use a bigger bowl or large mug, if you don’t have a mug big enough a small bowl will do the trick.

My mug cake is dry.

This is most likely because your mug cake overcooked or the batter is over mixed. Try to mix your batter until it just comes together, it’s ok if there’s still a few lumps in the batter. Check the cake after 40 seconds at 10 second intervals so it doesn’t over cook. It should feel spongey not squishy or firm.

My mug cake is wet in the centre.

Your cake is probably undercooked. Place it in the microwave for another 10-30 seconds. Check at 10 second intervals to ensure it’s fully cooked.

More Biscoff recipes

Spoon of biscoff mug cake taken out of mug.
Biscoff mug cake with spoon to the left and cookies to the right.
Print Recipe
5 from 3 votes

Biscoff Mug Cake

This delicious Biscoff mug cake recipe is an easy microwave recipe which means you can have an indulgent dessert in just a few minutes.
Prep Time5 mins
Cook Time1 min
Course: Dessert
Cuisine: American
Keyword: biscoff, biscoff mug cake, mug cake
Servings: 1
Calories: 470kcal


  • 1 tbsp oil neutral flavored
  • 2 tbsp smooth biscoff spread
  • 1 tbsp brown sugar
  • 3 tbsp milk
  • ¼ cup all purpose flour
  • ¼ tsp baking powder heaped


  • Place the Biscoff spread into a mug or small bowl and place in the microwave for 15-30 seconds until it's smooth and melted.
  • Add in the oil, sugar, milk and mix well with a small whisk or fork.
  • Add in the flour and baking powder, mix gently until it just comes together, it's ok if there's a few lumps.
  • Place in the microwave for 60-90 seconds (individual times may vary, depending on the power of the microwave).
  • Let the cake cool down enough to eat and serve immediately.
  • Top with ice cream and extra biscoff spread (optional).


Use a large enough mug or bowl so the cake doesn’t spill over in the microwave. Place a plate underneath just in case.
Don’t over mix the batter.
If unsure about the power of the microwave, check after 30 seconds and then at 10 second intervals. The cake should be spongey, not wet or firm.


Calories: 470kcal
By on October 19th, 2022

About modestmunchies

More posts by this author.

3 thoughts on “Biscoff Mug Cake”

  1. Thanks for giving me another way to use my son’s favorite cookies in a new bake. Everyone was super happy with this little mug cake – I made individual portions for a small dinner party I threw and it was a hit


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.