Slow Cooker Chicken Casserole

  • Author: Ciara Attwell
  • Prep Time: 3 mins
  • Cook Time: 3 hrs
  • Total Time: -26377264.316667 minute
  • Yield: 4 1x
  • Category: Dinner
  • Cuisine: Slow Cooker


Easy Slow Cooker Chicken Casserole – No chopping, no frying, bung all the ingredients in the slow cooker and leave it to do it’s thing. This is literally the easiest casserole recipe you’ll ever make!


  • 500g / 17.5oz skinless chicken thighs
  • 500g / 17.5oz  baby potatoes
  • 250g / 8.75oz baby carrots
  • 50g / 1.75oz frozen onions
  • 2 crushed garlic cloves
  • 250ml / 1 cup hot chicken stock
  • tbsp tomato purée
  • 2 tbsp gravy granules
  • 1 tsp dijon mustard
  • 250g / 5 cups mushrooms


  1. Wash the potatoes, carrots and mushrooms well. No need to peel them.
  2. Add all of the ingredients except the mushrooms to the slow cooker and mix well.
  3. Cook on low for 6 hours or high for 3 hours.
  4. Half way through add the mushrooms.
  5. Serve with green veg like broccoli or kale.


The casserole can be cooled and frozen for up to 2 months. To defrost, leave in the fridge overnight and then heat gently in a saucepan until hot through.