Vegetarian Christmas stuffing with mushrooms chestnuts pine nuts

Name: Vegetarian Christmas stuffing with mushrooms, chestnuts & pine nuts
Ingredients: 400gr mushrooms (portobello or other kind); 1 onion; 1 garlic glove; 25gr pine nuts; 100gr chestnuts cooked and skinned; 2 tablespoons olive oil; 2 tablespoons Marsala wine or 3 tbs white wine; 1 teaspoon thyme; 1/2 cup chopped parsley; 100 milliliters fluid cream; salt, ground black pepper