In a small saucepan, bring milk and cream to a boil.Set aside.Saute bacon until crisp;drain and crumble.Set aside.Place butter in saucepan over medium heat and toss brioche cubes to brown.Halfway through, place chopped green onion in pan and saute with brioche until wilted. Set aside. In a large bowl, whisk together flour and eggs until smooth.Add meat, parsley, salt, pepper and mix again.Pour into greased 8 x 8" baking dish. Sprinkle mozzarella cheese cubes evenly over top, followed by toasted brioche-onion mixture.Sprinkle with Parmesan cheese and crumbled bacon. Bake until set and lightly browned, about 30 minutes.Let cool at least an hour before serving.