Pre-heat oven to 400 degrees and melt butter in sauce pan.
In steps add flour to the butter and mix until incorporated then slowly add your milk and chicken broth. Remember to add the liquids slowly and simmer until thickened. Then add your cheese, mix and set aside
Trim or peel asparagus and place in an oven proof dish. Pour your sauce over the asparagus and top with bread crumbs. Bake for about 20 minutes and serve nice and hot. If you like your asparagus tender,just increase your baking time