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Biscoff Mug Cake (No Egg)

This easy microwave Biscoff mug cake is moist and packed with spiced cookie butter flavor. It’s the ultimate single-serving, quick dessert!
Prep Time 3 minutes
Cook Time 2 minutes
Total Time 5 minutes
Course Dessert
Cuisine American, Belgian
Servings 1 mug cake

Ingredients
  

  • Tbsp unsalted butter (see notes for substitutions*)
  • 2 Tbsp Biscoff spread (also known as cookie butter)
  • 1 Tbsp brown sugar
  • 2 Tbsp all-purpose flour (spooned and leveled)
  • ¼ tsp baking powder
  • ¼ tsp cinnamon
  • pinch of salt
  • 3 Tbsp milk

Instructions
 

  • In a microwave-safe mug, microwave butter in 30-second intervals at 50% power, until the butter is melted and hot.
  • Add the Biscoff spread and stir with a spoon (or mini whisk) until smooth. Then, add the brown sugar and stir again until it's dissolved.
  • Add the flour, baking powder, cinnamon, and salt. Mix gently until fully combined, until just combined (no more streaks). Avoid over-mixing.
  • Pour in the milk and stir until combined and smooth.
  • Microwave for 1 minute and 30 seconds**, or until the cake is set on top. If needed, microwave in additional 10-second intervals until done. The mug will be hot, so leave it in the microwave for a few minutes to cool. Add any toppings you want, and enjoy!

Notes

*Coconut oil (melted) should work as a substitution for the butter if desired.
**The cook time will depend on the shape and size of your mug.
Oven Baking Instructions: Alternatively, you can bake this cake in an oven-safe ramekin at 350 degrees Fahrenheit (176 degrees Celsius) for about 8 minutes, until set.
As a note, I tested a similar version of this recipe with an egg yolk (and less milk), and it wasn't nearly as good flavor-wise or texture-wise. So you're not missing out on anything by not using an egg here! :)
Keyword biscoff, cake, cookie butter, microwave, mug cake