Slow Cooker Chicken Casserole

A tasty, hearty casserole that’s low in fat and high in protein for the whole family to enjoy. Easy to make/prepare where you are letting the slow cooker do all the work. Great one for the busy households 🍲

Prep Time: 10-15Min | Cook Time: 4:15 – 7:15 Hrs | Serves: 2 Adults + 2 Kids

Calories & Macros


41g Protein | 30g Carbs | 9g Fat


  • Knob of Butter
  • ½ tbsp Rapeseed or Olive oil
  • 1 Large Onion, Finely Chopped
  • 1 ½ tbsp Flour
  • 650g Boneless, Skinless Chicken Thigh Fillets
  • 3 Garlic Cloves, Crushed
  • 400g Baby New Potatoes, Halved
  • 2 Sticks Celery, Diced
  • 2 Carrots, Diced
  • 250g Mushrooms, Quartered
  • 15g Dried Porcini Mushroom, Soaked in 50ml Boiling Water
  • 500ml Stock Made With 2 Very Low Salt Chicken Stock Cubes (we used Kallo)
  • 2 Tsp Dijon Mustard, Plus Extra to Serve
  • 2 Bay Leaves


  1. Heat a knob of butter and ½ tbsp rapeseed or olive oil in a large frying pan, cook 1 finely chopped large onion for 8-10 mins until softened and starting to caramelize.
  2. Meanwhile, put 1 ½ tbsp flour and a little salt and pepper in a bowl and toss 650g boneless, skinless chicken thigh fillets in it.
  3. Add 3 crushed garlic cloves and the chicken to the pan and cook for 4-5 mins more until the chicken is starting to brown.
  4. Transfer to your slow cooker, along with 400g halved baby new potatoes, 2 diced celery sticks, 2 diced carrots, 250g quartered mushrooms, 15g dried and soaked porcini mushrooms with the 50ml soaking liquid, 500ml chicken stock, 2 tsp Dijon mustard and 2 bay leaves.
  5. Give it a good stir. Cook on Low for 7 hours or High for 4 hours.
  6. Remove the bay leaves and serve with a little Dijon mustard on the side.

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