Spaghetti Casserole

I first decided I needed to make this when Lynsey told me about it. I found this recipe on Pinterest for it and it's one of the best things I've ever tasted. I love that it makes a whole casserole dish and it's perfect for leftovers. Tastes even better the second time!

1 pkg spaghetti (12 oz)
1 lb lean ground beef
1 can pasta sauce (26 oz)
1 tbsp butter
1/2 c chopped onions
8 oz lite cream cheese
2 tbsp milk
mozzarella or Parmesan cheese
French fried onions

Cook spaghetti according to package directions. While spaghetti is cooking, brown the ground beef, then add the pasta sauce and let simmer on low. Combine chopped onions and butter in a small bowl. Cover and heat in the microwave 4 min. Add cream cheese and milk to onions and stir. Spray a 9x11" casserole dish and add a thin layer of meat sauce. Cover that with the spaghetti noodles. Then, spread the cream cheese mixture over the spaghetti noodles. Cover with the rest of the meat sauce. Sprinkle mozzarella or Parmesan cheese over the top. Bake at 350 degrees for 25 minutes. Last, add the fried onions and cook 5 more minutes. Mmmmm.