Slow-Cooked Beef Minestrone
1.Dust beef with pan-searing flour; pat off excess.
2.Heat oil in large braising pan on MEDIUM-HIGH until oil faintly smokes. Add beef; sear 10 min until all sides are paper-bag brown.
3.Transfer beef to slow cooker; don't discard pan drippings. Add vegetables to pan with beef drippings; season with salt and pepper. Cook, stirring, 3 min; add to slow cooker.
4.Add stock, tomatoes, and sauce to slow cooker. Cover, cook 4 1/2-6 hours on HIGH or 8-10 hours on LOW.
5.Add dry pasta and beans 30 minutes before end of cooking on HIGH (45 minutes before end of cooking on LOW).
6.Add spinach to slow cooker; stir to blend well. Allow spinach to lightly wilt, about 2 min.