Place onions, celery, carrot and garlic in a food processor; pulse until finely chopped. In a Dutch oven, heat oil over medium heat. Add chopped vegetables and beef; cook and stir 6-8 minutes or until beef is no longer pink, breaking up beef into crumbles. Stir in nutmeg, salt and pepper. Remove with a slotted spoon; discard drippings from pot.
Return beef mixture to pan. Stir in wine. Bring to a boil; cook and stir until wine is evaporated. Remove mixture to a 6-qt. slow cooker; stir in cream, beef broth and tomato paste. Cook on low 3-1/2-4 hours or until flavors are blended, stirring occasionally. Serve with pasta. If desired, sprinkle with Parmesan cheese.