Improving Cook Slow Cooker Beef and Butternut Squash Stew. A very easy slow cooker beef stew with butternut squash to add some sweetness. Add pearl barley or serve with potato. Slimming World Friendly- syn free. Slow Cooker Chili, Slow Cooker Fajitas, Slow Cooker Enchiladas, Slow Cooker Lasagna, Cooks Slow Cooker, Slow Cooker Roast, Crock Pot Recipes, Beef Recipes, Healthy Recipes