How to make
Roll out the dough. Cut out circles using a form or glass.
Smear muffin forms with oil. Form baskets from the dough, make holes in them with a fork.
Smear the edges of the baskets with beaten egg yolk.
Cut the tomatoes into pieces, peel them and remove the seeds.
Put a piece of tomato and piece of emmental in each basket.
Bake in a preheated oven until golden.