As you are making the sauce, boil 4 quarts of water. Remove from heat; stir in Parmesan cheese, black pepper and garlic powder. This Homemade Creamy Alfredo Sauce Recipe is very rich, creamy, and full of flavor. … I AM FINALLY getting around to tasting the alfredo sauce with these ginormous KING CRAB LEGS (1lb each). White sauce, red sauce, sometimes a mix of the two. Add in the shrimp. //