Ham and Hash Brown Casserole

* 3 tablespoons butter
* 3 tablespoons all-purpose flour
* 2 cups milk
* 2 cups shredded cheddar cheese
* 1 tablespoon Dijon mustard
* 4 cups diced ham
* 1 package (32 ounces) frozen hash brown potatoes (cube style), thawed
* 1 (16-ounce) package frozen chopped spinach, thawed and drained well
* 1/2 cup bread crumbs

Over medium heat, melt butter in a large saucepan; add flour. Stir until smooth; add milk. Cook and stir until thick and bubbly; remove from heat and stir in cheese and mustard. Place half of the ham in a lightly greased casserole. Top ham with half of the hash brown potatoes and half of the cheese sauce mixture. Spoon spinach over the top. Repeat with the remaining ham, potatoes and sauce. Top with bread crumbs. Bake at 350° for about 45 to 55 minutes.