Mix the first 5 ingredients together with the brittle.
In the second bowl, whisk the egg, sugar, fat and the liquids together, briefly mix in the dry mixture with the wooden spoon until the dry mixture is moist.
Fill the muffin hollows.
Bake in a preheated oven at 180 ° (convection 160 °, gas 2) for approx. 25 min.
Leave for 5 minutes in the tray on the grid, which is covered with a damp cloth, it will then come off easier. Take out and let cool down further.