Heat butter in a non-stick frying pan. Fry zucchini, potatoes, onions and carrots over medium heat for about five minutes, season.
Mix soup, eggs and kitchen herbs, grind finely, add cheese, season with salt and freshly ground pepper and pour into the vegetables.
Cover and cook at low temperature for about twenty minutes until firm but not dry.
Turn frittata to other side, roast uncovered until done, about Fifteen min. Turn out onto a platter.
Tip: Cook double batch of frittata in baking dish. Sauté vegetables in portions in skillet, transfer to baking sheet lined with parchment paper, pour double mass of glaze over top. Bake: in about twenty-five min in the lower half of the oven heated to 220 °C.
For leftovers: frittata leaf salad
Cut the frittata from the day before into strips about 1 cm wide, mix with a vinaigrette and put in a well-sealed tin for about 1/2 day. Leave in the fridge with the lid closed.
Our tip: It is best to use fresh herbs for a particularly good aroma!