In a large sauté pan on medium high heat, heat enough butter and vegetable oil to cover the bottom of the pan. Add gnocchi to fill pan but not overcrowd, or portion per servings. Cook, shaking pan often until gnocchi are golden brown, about 3 minutes. Add a few tablespoons stock and portion of Mushroom Mélange; cook for 90 seconds until the sauce thickens. Add a sprinkling of chopped parsley. Plate servings and garnish with grated Parmesan.