Pasta bake is a great meal on it's own or a great way to use up leftover sauce and pasta. Sometimes I freeze the leftovers from pasta meals, separately of course, so I can use them for other recipes, or mix them together to make a delicious pasta bake.
To make this recipe from scratch...
1.) Cook pasta (of your choice) until done based on the directions on the box.
2.) Fry ground beef or turkey* with a diced onion until done, drain. Add 1 jar marinara sauce.
3.) Mix pasta, meat/onions, and sauce together and put in a greased pan. Top with shredded mozzarella and Parmesan cheeses. Bake at 350 degrees F until the cheese is melted, about 10-15 minutes depending on your oven.
4.) Serve hot with garlic bread and a side of veggies. Enjoy!
* Meat is optional, I've made pasta bakes without any meat; I've also used pepperoni in a pinch.