1
: In a skillet, cook sausage pieces over medium heat until cooked, about 5 minutes. Drain on paper towel. Pour off excess fat. Add oil, onion and apples to pan. Cook, stirring occasionally until softened, about 3 minutes
2
: In a large bowl, beat eggs lightly. Add evaporated milk, Swiss and Cheddar cheeses, breadcrumbs, parsley, sage, salt, pepper, cooked sausage pieces and onion apple mixture. Stir to combine. Pour mixture into a greased 8-inch or 9-inch (2 L) square baking dish.
3
: Bake in a preheated 350ºF (180ºC) oven for 35 to 40 minutes, or until a knife inserted in centre comes out clean. Let stand 10 to 15 minutes before serving.