package (24 ounces) frozen shredded hash brown potatoes, thawed
1
package (10 ounces) frozen chopped spinach, thawed and drained
Preheat oven to 350°F.
Melt butter in large saucepan over medium heat; stir in flour. Add milk. Cook and stir until bubbly; cook 1 minute more. Remove from heat. Stir in cheese and mustard; set aside.
Place half of Ham in ungreased medium casserole. Top with half of potatoes and half of milk mixture. Spoon spinach over top. Repeat layers with remaining ham, potatoes and milk mixture.
Bake, uncovered, 30 minutes or until heated through.