Cook noodles according to package directions, omitting salt and fat; drain and set the noodles aside.
While the noodles are cooking, heat the olive oil in a large nonstick skillet over medium-high heat. Add sliced onion and caraway seeds, and cook 4 minutes or until lightly browned, stirring constantly. Add apple, sauerkraut, and sausage, and cook 5 minutes. Stir in the chicken broth and sherry, and bring to a boil. Reduce heat to medium, and cook 5 minutes. Serve over the noodles.