Slow Cooker Chicken Casserole

Slow Cooker Chicken Casserole

The aroma of a hearty meal wafting through the house is a sure way to elicit feelings of comfort and contentment. Slow Cooker Chicken Casserole is a testament to the joys of simple cooking that yields deeply satisfying results in the realm of easy-to-make yet delicious dishes.

Slow Cooker Chicken Casserole

Recipe by GeeDeeCourse: MainCuisine: BritishDifficulty: Easy


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A warming delicious slow-cooked chicken casserole with succulent meat, veggies making it a delightful comfort meal.


  • 600 g chicken thighs skinless and boneless

  • 1 lge onion roughly chopped

  • 1 leek washed, sliced lengthways and sliced

  • 2 sticks celery sliced

  • 2 lge carrots washed peeled and sliced

  • 2 garlic cloves minced

  • 1 tbsp plain flour

  • 200 ml chicken stock

  • 2 tbsp dijon mustard

  • 270 g baby new potatoes washed and halved

  • 1 tsp thyme

  • 1 tsp oregano

  • ¼ tsp sea salt

  • ¼ tsp black pepper

  • 100 g button mushrooms halved

  • 10 g fresh parsley finely chopped to serve


  • Heat a knob of butter and glug of vegetable oil in a large frying pan
  • Add the chopped onion and sweat off fo a couple of minutes then add the leek, celery, carrot and garlic and allow to cook out for 4/5 minutes, tossing now again. until
  • Add the vegetables to the slow cooker
  • Sprinkle the flour over the vegetables and mix thoroughly to coat all the veg.
  • Add the baby potatoes
  • Heat another knob of butter and a glug of veggie oil to the frying pan, add the chicken thighs and brown them all over, sealing the meat
  • Add to the slow cooker
  • Heat the stock up, if you are using a stock cube (just 1 cube to 200 ml hot water) and add the mustard, stir well and pour over the chicken and vegetables, give it a stir
  • Add the herbs and season with salt and pepper
  • Cook on high for 4 hours. or on low for 6 hours
  • hour before the cooking time finishes,** See Notes, remove the chicken to a plate and shred using 2 forks, (Make it thick shreds, rather than thin) return the chicken to the slow cooker and add the mushrooms.
  • Also, check the consistency
  • If you feel the sauce is to thick add a little boiling water.
  • If to feel the sauce is to thin sprinkle 2 tablespoons of chicken gravy granules (1 at a time) and stir well after each addition
  • Replace the lid and continue with the cooking
  • Serve sprinkled with fresh chopped parsley, green beans and broccoli if so desired.
  • Enjoy!


Slow cooker chicken casserole recipe invites us to slow down and savor life’s simple pleasures in a fast-paced world. It serves as a reminder that exceptional food can be created with a few fresh ingredients and patience. So, embrace the magic of slow cooking and indulge in a dish that will warm both your body and your soul.

Also Read: Slow Cooker Ratatouille


Q: Is it okay to use frozen chicken in this recipe?

Frozen chicken can be used, but it is best to thaw it before cooking for consistent results.

Q: What is the ideal size for a slow cooker?

This recipe calls for a 6-quart slow cooker, which provides enough space for proper cooking.

Q: Is it safe to cook this on high heat?

Cooking on low heat, when possible, allows flavors to develop more fully.

Q: What about leftovers the next day?

Leftovers frequently taste even better as the flavors meld.

Q: Can I substitute another protein for the chicken?

Yes, you can experiment with different proteins such as turkey or tofu to change up the classic recipe.