Brown ground beef and onion in large skillet; Drain fat.
Return ground beef to skillet and mix both jars of pasta sauce with ground beef; Remove from heat.
In a bowl mix ricotta cheese, egg, salt, and pepper
Turn the slower cooker to high
Spray slower cooker with non stick spray
Spoon the sauce into the bottom of the slower cooker; Enough to evenly coat the bottom
Spoon the ricotta cheese mixture on top of the sauce evenly coated
Pour uncooked ziti noodles on top of ricotta cheese evenly coated
Sprinkle colby cheese on top of pasta evenly coated
Repeat steps 6-9 until you reach the top of slow cooker; making sure the final layer is a generous amount of colby cheese
Put the top on slow cooker; cook for 4 hours or until pasta is tender. Avoid opening the slow cooker while cooking.
Enjoy!!
