Trim off fat and silver skin from meat. Melt butter in heavy skillet over medium heat. Brown meat on four sides. Remove meat from skillet and place in a large crock pot. Add remaining ingredients, except flour. Cook on low for 8 hours or until meat falls apart with a fork.

Remove meat and vegetables to serving platter. Keep warm. Blend flour into 1 cup broth. Place in saucepan with remaining broth and bring to boil. Cook, stirring constantly, for 2-3 minutes, or until thick. Serve with sliced meat and vegetables. Serves 4-6.