Slice frozen K&N's Jumbo Frank Sausage and set aside.
In a pan, heat butter on low heat. Add flour and stir for 2 minutes.
Pour warm milk. Mix well and add red chilli flakes, onions, black pepper powder, salt, parsley and stir.
Add the sliced sausages and mix well.
Add ½ cup cheese to the pan and stir on low heat.
Transfer mixture to a baking dish, and top with ½ cup cheese and bread crumbs.
Bake in a preheated oven for 5 minutes, at 250°C.
Garnish with chopped parsley and serve hot.