finely chop one large onion, one cup chopped celery, and one cup chopped carrot. Add to the pot and sautee until soft. About 8-10 minutes. Add 3 Tablespoons minced garlic and cook one minute. Add 1/2 pound cremini or white button mushrooms.
Add 2 bay leaves, 5 sprigs fresh thyme, and 2 sprigs of fresh rosemary.
Add 21/2 cups good dry red wine, 3 Tablespoons tomato paste, 1 (15oz) can crushed tomatoes, 2 cups of beef stock, and 1/4 teaspoon crushed red pepper and 1 teaspoon salt,
Return short ribs to slow cooker and cook for 6hours on low or until meat is tender. Adjust seasonings to taste. Serve with mashed potatoes.