Brown ground beef, onion and garlic in frying pan..
Add tomato sauce, tomato paste, salt and oregano.
Cook long enough to get it warm.
Spoon a layer of meat sauce onto the bottom of the slow cooker.
Add a double layer of uncooked lasagna noodles (break to fit) and top with cheeses.
Repeat with sauce, noodles and cheeses until all are used up.
Cover and cook on low for 4 to 5 hours.

Cook on LOW in crockpot for 4-5 hours. Not on high or it will burn