Gratinated turnip with cheese and nut crust

Ingredients for 4 servings:

• 15 g porcini mushrooms, dried
• 1 m.-sized turnip(s), approx. 1 kg
• 1 onion(s)
• 1 tsp tarragon, dried
• 200 ml whipped cream
• 200 ml broth (ready-made porcini mushroom yeast broth)
• 100 ml low-fat milk
• 1 pinch of salt
• ½ tsp black pepper, freshly ground
• 100 g Gouda, aged
• 1 tbsp walnuts, chopped

Instructions

Working time approx. 30 minutes; Cooking/baking time approx. 1 hour 15 minutes; Total time approx. 1 hour 45 minutes

Soak the mushrooms in lukewarm water for about 15 minutes. Meanwhile, peel the swede and grate it into very thin slices. Finely chop the onions. Drain the mushrooms. Layer the swede, onions, mushrooms, and tarragon in a casserole dish. Mix the cream, stock, milk, salt, and pepper and pour over the vegetables. Bake, covered, in a preheated oven at 200°C (fan oven: 180°C, gas mark 3) for about 1 hour. Grate the cheese, mix it with the walnuts, and sprinkle it over the casserole. Bake for another 15 minutes at the same temperature.