1.Place The Beef Into A 3 1/2- To 6-Quart Slow Cooker. Add The Brown Sugar, Garlic, Thyme And Flour. Toss To Coat. Stir The Soup And Ale In A Small Bowl. Pour Over The Beef. 2.Cover And Cook On Low For 8 To 9 Hours* Or Until The Beef Is Fork-Tender. Serve With The Mashed Potatoes.