Slice the bread, peel the garlic and cut into thin slices. Clean and clean the mushrooms, cut large mushrooms possibly smaller. Wash sage and rosemary and shake dry. Pluck leaves or needles from the stalks
Mix sour cream, stock, cream and starch. Heat 2 tablespoons of oil in a frying pan. Add butter, melt, add mushrooms and fry for 4-5 minutes while turning. Fold in herbs, season with salt and pepper. Stir in the sour cream mixture, bring to the boil briefly. Pour mixture into one large or 2 small, greased casserole dishes. Flatten cheese between 2 layers of kitchen paper and dab dry. Loosen cheese from the paper, tear up and sprinkle over the mushrooms. gratinate under the preheated grill of the oven on the middle shelf for 6-8 minutes
Heat 1 tablespoon of oil in a frying pan. Fry the slices of bread brown while turning, finally add garlic and fry for about 1 minute. Season the slices of bread with salt and pepper and let them drip off on kitchen paper. Remove the gratin and serve with the slices of bread