How to Roast a Lamb in a Slow Cooker

Updated April 17, 2017

A slow cooker is a convenient way of preparing large cuts of meat. If you lead a busy lifestyle, a slow cooker is for you. Lamb is one of those meats that will need to cook for a long time to taste tender and juicy. With a slow cooker, you can start roasting your lamb early in the morning and by dinner you will have a succulent lamb roast ready. Make sure your slow cooker is large enough to fit your lamb roast with the lid on.

Prepare your roast the night before. Rinse your lamb roast under cool water. Take a knife and make small slits across your roast. Since the meat will be cooking slow you will want to open the meat so the heat will penetrate the inside of the roast. Take the lamb and place the lamb in a large sealable bag with your choice of marinate or 1 cup of chicken broth. Place in the refrigerator overnight.

Cut the lamb to fit your crock pot. Lamb will cook more evenly when cut into small pieces. Normally a large slow cooker or any size above 5 quarts is large enough to roast a whole cut of lamb. Cut 2 cups of vegetables in large slices and place them in the bottom of the crock pot. Vegetable like onions, garlic, carrots, peppers and potatoes are vegetables that will compliment a lamb dish.

Place the slow cooker on low heat if you plan to roast the lamb up to eight hours or high heat if you plan to roast the lamb four to six hours. Place your sliced vegetables on the bottom of the crock pot in 1 cup of chicken broth. Add your lamb on top of your vegetable, cover and slow cook.

Experiment with different dry seasonings to add flavour to your roast lamb dish. Dry herbs like rosemary, basil and mint leaves can be rubbed on the lamb to add additional flavour to your dish. Slow cooking will allow the seasonings to penetrate the meat in the cooking processes.

Remove slow cooker insert and serve your meal. One of the conveniences of using a slow cooker is being able to take the meal and serve it directly from the slow cooker. Slow cookers prepare the meal in an insert that can be removed and placed on your dinner table. Stir in your vegetables and serve your hearty roasted lamb dish.


Keep dish covered for the entire time. Opening the lid delays the cooking process. Always add some kind of liquid to your slow cooker. Foods will be dry and burn if you don't.


Always use thawed meats. Using frozen meats may cause the meat to under cook and put you at risk of food poisoning.

Things You'll Need

  • 5-quart or larger slow cooker
  • 1.36 Kilogram lamb
  • 2 cups of assorted fresh vegetables
  • Onions
  • Peppers
  • Carrots
  • Potatoes
  • Garlic
  • 3 cups chicken broth
  • Liquid marinate for lamb
  • Knife
  • 5-quart sealable bag
  • 1/2 cup of assorted dry herbs
  • Rosemary
  • Basil
  • Mint leaves
Cite this Article A tool to create a citation to reference this article Cite this Article

About the Author

Drenee Brown began writing online articles in 2006, contributing to various websites. She is a former Six Sigma specialist and received her certification through Ford Motor Company Lean Academy. She is also an entrepreneur and president of an electrical contracting company in Atlanta. She holds an Associate of Arts in communications from Sawyer Business School.