1. Warm a muffin tin in the oven. Butter well, dust with flour and shake off the excess. Melt the butter in a microwave at 400 W for 1 minute.

2. Mix the sifted flour, baking powder and a little salt.

3. Whisk the sugar and eggs together. Add room-temperature milk, the flour mixture and butter. Add vanilla and mix with a spatula until combined.

4. Chop the chocolate finely with a serrated knife, add to the batter and stir.

5. Fill the moulds two-thirds full. Bake in a preheated oven at 200 °C for about 20 minutes. Serve with chocolate drops and topping if desired.