A roast typically takes about 8 to 10 hours to cook in a crock pot on low heat, or about 4 to 6 hours on high heat, depending on the size and cut of the meat. For example, a 3-pound boneless beef chuck roast should be cooked for 8-10 hours on low or 5-6 hours on high until tender and easily shredded with a fork
. Some recipes recommend cooking on low for 9 hours or on high for 6 hours for a 3-pound roast with vegetables
. Cooking on low heat for a longer time (8-10 hours) is preferred to allow the meat to become tender and flavorful, while cooking on high heat can be used if you have less time, typically 4-6 hours
. The roast is done when it falls apart easily and reaches an internal temperature of about 145°F
. In summary:
- Low heat: 8 to 10 hours
- High heat: 4 to 6 hours
Adjust times slightly based on roast size and your slow cooker model.