Spinach and Ham With Rosemary Dijon Breakfast Casserole

4 egg whites
4 eggs
1 cup milk
1 teaspoon rosemary
1/4 teaspoon pepper
2 tablespoons Dijon mustard
4 cups whole-grain bread cut into 1-inch cubes 
5 cups spinach
1/2 cup roasted red peppers
1 cup diced ham steak (5 ounces)
3/4 cup Swiss cheese, shredded

While preheating oven to 375 degrees, grease a 2-quart baking dish with cooking spray.
In a medium bowl, whisk the egg whites, eggs, and milk together. Add the rosemary, pepper and Dijon mustard and mix together.
In a large bowl, add the bread, spinach, red peppers and ham. Add the egg mixture to this and toss to evenly coat. Pour into greased baking dish and push down to compact. Cover with tin foil.
Bake for 40 to 45 minutes. Uncover and sprinkle with cheese and continue to bake until it’s puffed and golden brown on top, approximately 15 to 20 more minutes.
Cool for 15 minutes before serving.