Onions peel and cut into cubes. Clean, wash and halve the mushrooms. Cut ham into cubes. Heat the oil in a wide saucepan. Sauté prepared ingredients for about 5 minutes while stirring. Add cream and milk, bring to the boil. Season with salt and pepper.
Stir in tagliatelle and pesto. Pour into a greased roasting pan. Melt the fat. Grate bread crumbly. Mix fat and bread and spread on the pasta. Sprinkle with cheese. Bake in a preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: level 4) for approx. 15 minutes
With 6 people: