Simmer asparagus and butter until free of juice (set aside)

Simmer mushrooms and butter till free of juice (set aside)

In separate bowl Whip cream, eggs, flour, salt & pepper until foamy (set aside)

In buttered baking dish layer 1/3 cheese, all asparagus, 1/3 cheese, all mushrooms, cream mixture, let stand 30 minutes

Add 1/3 cheese to top, bake at 300 F for 30 minutes and serve immediately