For the Toasties, crumble the yeast in 75 ml of lukewarm water and dissolve it while stirring. Knead the yeast water in a bowl with flour, 1⁄2 TL salt, 1 TL sugar and yoghurt with the dough hooks of the mixer to a smooth dough.
Cover with a clean tea towel and leave in a warm place for about 1 hour until it has doubled in volume.
Knead the dough well again. Sprinkle the worktop with semolina and roll out the dough until it is about 2 cm thick. Use a large glass (approx. 8 cm Ø) to cut out 12 toasties, but knead the dough again and again.
Sprinkle all toasties with a little semolina. Cover with a tea towel and let it rise again for about 30 minutes.
Heat 1 tablespoon of oil or butter in a large pan and bake the Toasties in it in portions at medium heat for 4-5 minutes. Turn the toasties with a spatula and bake on the other side for 4-5 minutes.
Remove the baked toasties and let them cool down on a cake rack.
For the MäcEgg cheese grate roughly. Fry bacon in a pan without fat on both sides until crispy. Take out and let drain on kitchen paper. Fry the eggs in the frying fat to make fried eggs. Cut 4 toasties open, cover the undersides with 2 slices of bacon and 1 fried egg each, sprinkle cheese on top.
Cover each with 1 top side, press on lightly.