This is a cozy mug cake flavored with Biscoff cookie butter, brown sugar and cinnamon. The cake is topped with even more melty cookie butter and, if you like, a crumbled Biscoff cookie!
To ensure the batter doesn't overflow in the microwave, use a microwave-safe mug that holds at least 12 ounces (355 ml). You can also place the mug onto a microwave-safe plate to catch any potential drips.
To substitute salted butter for the unsalted butter, omit the pinch of salt from the recipe.
If your baking powder is pebbly, break it apart with your fingers or a fork before adding it to the batter. Any unmixed chunks of baking powder will taste bitter in the finished cake.
The nutrition information below was calculated to include the optional Biscoff cookie. This nutrition information is an estimate only; the nutrition counts of your dish will vary based on the brands and exact amounts of ingredients used. This information was provided by an online nutrition calculator, and should not be considered a substitute for professional medical, health, or nutritional advice. See our full nutrition disclosure policy.
Keywords: Biscoff mug cake