1. Wash and slice thinly the mushrooms.
2. Melt some butter in a pan and then fry them with the dill and salt.
3. Take off the heat and add a beaten egg and mix well.
4. Prepare the French toast and place a thick layer of mushrooms on top of them, smoothing with a knife.
5. Put another piece of toast on top of it and bake for 10 minutes.
6. Serve hot.