Preheat your oven to 350 degrees and grease a 9x13 baking dish.
Spread half of English muffin cubes in bottom of baking dish.
Sprinkle half of Canadian bacon and half of asparagus on top of English Muffin cubes.
Scatter swiss cheese pieces on top of asparagus and Canadian bacon.
Repeat with remaining English muffin cubes, Canadian bacon, and asparagus.
In a medium bowl whisk eggs, milk, salt, pepper, onion powder, and paprika together.
Pour evenly over casserole dish. Cover and refrigerate overnight.
Bake covered for 40 minutes.
Uncover, sprinkle mozzarella cheese and green onions on top and bake uncovered for 10 minutes.
Serve with Hollandaise Sauce and ENJOY!