Stuffed Portobello Mushrooms

Name: Stuffed Portobello Mushrooms
Ingredients: 2 tablespoons olive oil, plus more for drizzling; 1/4 cup sauerkraut; 3 cloves garlic, minced; 1/2 shallot, minced; 8 ounces ground beef; 1/2 cup beef stock; 1 cup mixed mushrooms, chopped; Salt and freshly ground black pepper; Pinch cayenne; 2 tablespoons sauerkraut brine; 2 portobello mushrooms, stemmed; 1/2 cup breadcrumbs; 4 ounces cream cheese