Broccoli Florets and Ham Bake

From a bag of generic broccoli

1 pkg broccoli florets
1 cup cooked ham, cubed
3 tbsp butter
3 tbsp flour
1 1/2 cups milk
1/2 tsp salt
1/4 tsp pepper
1/4 tsp dry mustard
1 1/2 cups cheddar cheese, shredded
Preheat oven to 350 dgrees. Grease a 9x13 baking dish. Layer defrosted broccoli florets and ham in bottom of dish. In a medium pot melt butter and whisk in flour. Add milk and whisk until smooth. Add spices and cheese and continue to whisk. Pour mixture over broccoli and ham. Bake 15 to 20 minutes until bubbling.