How Long to Cook Pork Loin
Pork loin can be prepared in a couple of different ways. Some prefer to roast their pork loin in the oven while others choose to use a slow cooker. The method you choose will determine how long to cook a pork loin for.
If you prefer to cook your pork loin in the oven, a good rule of thumb to follow is 25 minutes per pound when roasting at 350F. So, if you're cooking a 3-pound pork loin, you should expect it to take approximately 75 minutes to fully cook.
For those who prefer to use a slow cooker to prepare their pork loin, it will take 5-6 hours on a low setting or 3-4 hours on a high setting, depending on the loin's size.
You also need to factor in your preferred level of doneness when deciding how long to cook a pork loin. A pork loin cooked to medium-rare will take less time than one made well-done. You can measure your pork loin's level of doneness by using a meat thermometer to check the internal temperature.
The temperature for each level of doneness is:
Medium-Rare: 145 to 150 degrees Fahrenheit
Medium: 150 to 155 degrees Fahrenheit
Medium-Well: 155 to 160 degrees Fahrenheit
Well-Done: 160 degrees Fahrenheit