Preheat oven to 375 degrees F.
For the sauce: Melt
in a saucepan
. Add minced shallots
and saute for 1 to 2 minutes. Add the flour to make a roux. Cook for about 2 to 3 minutes to cook the flour. Slowly, add 3 cups milk. When milk is incorporated into the roux
, add the seafood
seasoning, and the block of cream cheese. Cook until cream cheese is melted. Add shredded manchego and Cheddar cheeses and parsley. Cook until all the cheese is melted. Add the sherry
, if desired.
Cook macaroni according to package directions or until just al dente
macaroni. Stir cheese mixture into cooked macaroni
and old in crabmeat. (Be sure to fold in crabmeat so you don't break up the lumps too much, you want nice chunks of crab
.) Put mixture in a baking dish