I wanted to do a pasta recipe, but wanted something other than the usual ziti or lasagna. Then I remembered a pizza casserole I did a few years ago and thought, why not try it in a crock pot? So, here it is. I'm really pleased with how it turned out! It's delicious and hearty and it feeds a crowd. Hope you like it! 1 lb. rigatoni (uncooked) 2 26 oz jars tomato sauce (or your own marinara sauce) 1 tbs. dried oregano 1 lb. ground beef 1 lb. Italian sausage, (removed from casing) 1 onion…