Cook linguine according to package directions
While pasta cooks, wrap frozen crab legs in damp paper towels
Microwave crab legs for 3-4 minutes
Remove from microwave and let cool to touch
Crack crab legs and pull out crab meat. Break apart into bite size pieces.
Melt butter in sauce pan.
Lower heat to low
Add garlic and stir for 1 min.
Stir in flour and cook for 1-2 minutes until it looks sandy.
Whisk in the half and half and stir until the mixture forms a thick sauce.
Stir in the cheese and salt.
Simmer a few minutes to blend the flavors.
Remove from heat and add cooked linguine to sauce mixture and stir
Plate linguine alfredo and top with crab meat
Sprinkle with grated parmesan and parsley