Taking to instagram, Jules shared a video of her making the mug cake and wrote: "Peanut Butter Biscoff Cake in 1.30 minutes!"
"Pete from MasterChef shared this recipe and I can’t believe my eyes! I added Biscoff because Biscoff on everything… Enjoy," she said.
In the video, Jules uses a handful of ingredients, and all you need is a mug handy and a microwave.
She explained that you'll need two tablespoons of peanut butter, a tablespoon of Biscoff, a tablespoon of sugar, and one egg.
"Stir that all together and then put it into a mug, put the mug into the microwave for a minute and a half," she said.
"You will not believe your eyes when you pull it out, it turned into cake!"
She said you can also add a "dollop of vanilla ice cream" to enjoy with the cake, or add anything else you'd like to it.
"This is the easiest, fastest, most delicious dessert you will ever make," Jules said.
We don't doubt it!