Preheat the oven to 175 degrees Celsius (347 degrees Fahrenheit), conventional oven.
After rising, roll out the dough into a square, 3-4 mm thick. Cut the dough into squares of about 10×10 cm.
Put a little apple compote, marzipan filling, and chopped chocolate in the center of each square.
Fold the corners of the dough over the filling and pinch tightly at the seams.
Place the Shrovetide buns on a baking sheet with parchment paper, seam side down.
Let rise for another 30 minutes.
Brush and bake for about 18 minutes until nicely golden.
Let the buns cool and decorate with glaze before serving.