Method:

Prepare the Simply Chicken Cheese Grillers according to package instructions and then cut them up into bite sized pieces.
Preheat the oven to 180°C.
In a sauce pot add the butter and flour, cook for 1-2 minutes before slowing adding the milk. Make sure to whisk continuously while pouring the milk. Cook the sauce for 6-8 minutes until thickened and then remove from the heat and stir in half the cheese until incorporated. Season the sauce with salt and pepper.
Add the pasta to a baking dish, add the sauce, peas and chopped cheese griller and mix until combined. Add the remaining cheese on the top and place into the oven to cook for 25-30 minutes until the cheese has turned golden brown in colour.