Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Put flour, baking powder, sugar, vanilla sugar, salt, butter, eggs, milk and 1 teaspoon of cooking colour into a mixing bowl and mix with the whisks of the mixer for approx. 3 minutes to a smooth dough.
Fill half of the dough into each cavity of a silicone muffin baking tin (6 cavities) (if you do not use a silicone muffin baking tin, the muffin edges will brown more). Bake in a hot oven for 20-25 minutes.
Cover with aluminium foil after approx. 15 minutes. Remove and let cool for about 20 minutes. Take out and let cool down. Clean the tin and bake 6 more muffins with the remaining dough.
Stir icing sugar and lemon juice until smooth. Spread the muffin surfaces with it. 1⁄4 Stir 1 teaspoon of food colouring with 1 teaspoon of water. Stick wooden knives, chopsticks and French fries forks into the muffins. Decorate the puncture marks with the mixed food coloring as blood.