Now, make the béchamel pizza sauce. In a small saucepan, melt the butter over a medium heat on a hob (stovetop). Add the flour and garlic, and stir for about 1 minute or until bubbling. Slowly whisk in the milk until well combined and glossy. Remove the pan from the heat. Add the cream cheese, stirring until well combined. Add the crab seasoning, dried parsley and season with salt and pepper to taste.