Make a shortcrust pastry from flour, butter, egg yolk and salt. Shape into a ball, wrap in foil and refrigerate for 1 hour.
Whisk eggs and cream together. Grate the cheese, fold into the egg cream, season with salt and pepper, butter 4 tartlet molds (diameter 12cm). Divide the cooled dough into 4 portions, roll out and line molds with them. Spread the Emmentaler mixture on the tartlets and place in the cold oven. Bake in the electric oven at 200 ° C (convection: 180 ° C / gas: level 4) for approx. 30 minutes.