Preheat the grill function on the oven.
In a pan sauté onion in oil, then add the chicken strips and mushrooms and cook until well browned.
Add sachet of Seasoning Spice Blend, milk uncooked pasta and baby spinach.
Bring to the boil, stirring occasionally. Reduce heat and allow to simmer uncovered for 10 - 15 minutes, stirring occasionally until pasta is cooked.
Empty contents of Cheese Sauce sachet into a measuring jug and fill to 200 ml with rapidly boiling water. Once all the water has been added, stir with a fork for 1 minute, until thick and smooth then set aside.
Remove pan from heat and pour into a 2L oven proof dish. Pour cheese sauce over and top with grated cheese.
Grill for 10 minutes or until cheese is golden brown.
Serve and enjoy!