Don't thaw your pasta! It's important to cook frozen pasta from frozen. Bring a big stockpot full of salted water up to a boil, then add the frozen pasta. It will likely be clumped together, so stir often to separate the pieces. Once the pasta starts to float to the top, it's close to down. Follow the cooking recommendations on the package to know when to remove the pasta from the water. Add your sauce and serve!