Preheat the oven to 220 °C. Place the gratins on the baking tray and spoon the truffle tapenade on top. Bake the gratins in the preheated oven in 20-25 until golden brown and cooked through.
Wipe the mushrooms clean and cut them into tiny pieces. Melt the butter in a sauce pan.
Fry the shallot and garlic for 2 minutes.
Add the mushrooms and fry for 5 minutes until tender. Add the cream and heat for another 1-2 minutes. Stir the parsley with the salt and pepper to taste into the mushroom mixture (‘duxelles’).
Put the gratins on a plate and spoon the duxelles in a nice dot on top.
Tip: Delicious with steak or veal schnitzel and a fresh green salad.