Baked Ziti Casserole

This is my go-to meal when I want to make food for a friend or their family when they are feeling under the weather, just had a baby ect.  Its fast, simple, filling and makes great leftovers!!

Baked Ziti Casserole
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1 box or bag of pasta (penne, spirals, macaroni or even tortellini)
1 jar or can of spagetti sauce
1/2 to 1 Ib ground beef or Italian sausage or a combo
1 small container of ricotta cheese
1 bag of shredded motz cheese (reserve 1/2 cup)
onion-diced
garlic
pepper
red pepper flakes-optional
*(you can add whatever you want to this dish.  You could add mushrooms, red or green peppers or some zucchini and squash, just cook it up with the meat or leave the meat out and make it vegetarian)

Boil the pasta as recommended on the package.  In the mean time brown the meat with diced onion. Add garlic, pepper and red pepper flakes to taste.  Place the browned meat, the spag sauce, and both cheeses in a large mixing bowl.  When the pasta is done drain and mix it in.  Pour into a casserole dish (or a disposable 9x13 if giving it away).  Top with remaining motz cheese. You can now refrigerate or freeze it and keep for later or bake it now.  Bake time will be based on if it is warm, cold or frozen.  Bake at 350 uncovered until hot in the middle.