01 -
Boil the fettuccine in salted water according to package directions until al dente. Drain and set aside.
02 -
In a large skillet over medium heat, melt the butter. Whisk in the flour and cook for 30–60 seconds, stirring constantly.
03 -
Slowly add the milk a little at a time, whisking thoroughly between each addition. Add the cream cheese in small chunks, stirring until it melts into the sauce.
04 -
Add Parmesan, parsley, garlic powder, onion powder, salt, and pepper. Stir until the sauce is smooth and well blended.
05 -
Gently stir in the lump crabmeat and simmer on low heat until the crab is warmed through.
06 -
Toss the cooked fettuccine with the Alfredo sauce, or serve the pasta topped with generous spoonfuls of the sauce.