Tomato or Bolognese Sauce: Take the container from the freezer, run under hot water to loosen.  Remove the lid. Transfer sauce into a sauté pan and heat on low heat until hot. Toss with your favorite pasta or ravioli. Pesto Sauce: Take the container from the freezer, and defrost in the fridge overnight.  Remove the lid. Toss with your favorite pasta or ravioli.