Whisk the butter and sugar together. Add the remaining ingredients and stir until creamy.
Pour the mixture into the greased muffin tin and bake in the preheated oven at 170 ° C for about 35-40 minutes.
Tip:
Optionally, various fruits such as cherries or chocolate flakes etc. can also be added.
If you have a muffin pan, grease it before preparing it and place it in the refrigerator until it is full. This way the muffins won`t stick to the mold later.