Ham and Cheese Croissant Breakfast Casserole

0 Preheat oven to 350ºF. Grease a 9x13 inch casserole dish with cooking spray.
1 Cut croissants into bite size pieces about an inch and place them in to the baking dish.
2 Layer evenly ham and garlic on top of the croissants. 
3 In a medium sized bowl add  eggs, milk, dijon mustard, salt, pepper and onion powder. Whisk until combined.
4 Pour the egg mixture over the croissants and ham.
5 Top with shredded cheese and bake at 350º F for 45-50 mins.