1 Pat roast dry. In large, shallow dish, combine garlic and steak spice; rub all over roast. In large Dutch oven, heat 2 Tbsp (30 mL) of canola oil over medium-high heat and brown raost all over, turning with wooden spoon, about 8 minutes.2 Transfer to plate; set aside. Drain off fat in pan.3 Reduce heat to medium and heat remaining oil. Fry onions, stirring occasionally, until golden, about 4 minutes. Transfer onions to 24-cup (6L) slow cooker.4 Top with browned roast. Add beef stock to Dutch oven; bring to boil, stirring and scraping up brown bits. Pour over roast. Cover and cook on low until fork-tender, about 7 hours.5 Remove pot roast; cover and keep warm. Skim fat from pan juices. Whisk flour with 1/2 cup (125 mL) water, then whisk into slow cooker.6 Cover and cook on high until thickened, about 15 minutes.Sprinkle with parsley and serve with roast.
