Wash or scrub the potatoes well. Cook in water for about 20 minutes
Peel and chop the onion. Clean, wash and slice the mushrooms. Dice ham. Wash thyme, pluck off leaves
Heat 1 tablespoon of oil. Sauté the onion in it. Add mushrooms and fry until golden brown. Fry the ham briefly. Add thyme. Stir in cheese and cream (up to 2 tablespoons each). Let simmer for about 5 minutes, season to taste
Drain the potatoes and cut off a flat lid crosswise. Remove the inside of the potatoes, mash them and stir into the mushroom mixture. Fill the mixture into the potatoes. Bake on the oiled baking tray in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C / gas mark 3) for 12-15 minutes.
Mix the rest of the cheese and cream. Put something on each potato. Garnish with lettuce, tomatoes and herbs
Drink: cold beer