Finish Pasta in the Sauce
Hot Tips From Food Network Kitchens’ Katherine Alford:
Drain your pasta when it's just al dente, then cook it for a minute or 2 more in a skillet with the sauce. This lets the pasta absorb flavor from the sauce and it helps the sauce cling to the pasta. Try it with any simmered sauce (not pesto or carbonara), and if the sauce gets too thick, thin it with some of the pasta cooking water.