Peel, wash and slice the carrots and potatoes. Heat the oil in a large pan, drain the bacon. Add potatoes and fry covered for about 5 minutes. Turn in between. Add carrots and fry covered for another 5 minutes. Meanwhile peel and roughly dice the onion.
Clean the mushrooms and clean them. Add mushrooms, onion and thyme to the pan. Fry them without lid for another 8 minutes, turning them over. Season with salt and pepper and cover with the cheese slices. Cover and let the cheese melt for about 2 minutes. Sprinkle with chives and garnish with fresh herbs