01 -
Give your 6-quart slow cooker a quick spray with nonstick spray so nothing sticks later.
02 -
Dump the ricotta, eggs, mozzarella cheese, parmesan cheese, all the garlic, salt, pepper, and Italian seasoning in a big bowl and stir it all up until it's smooth and blended.
03 -
Spread out about 3/4 cup alfredo on the very bottom of the cooker, then lay down around 5 lasagna noodles (break them up as needed) so the sauce is totally covered.
04 -
Keep 1.5 cups alfredo sauce off to the side. Over your noodles, pour on half the leftover sauce. Drop on half the cheese mixture and smooth it out. Sprinkle on 1.5 cups of chicken and 1 cup spinach.
05 -
Place about 5 more noodles on to cover what you just layered. Spread the rest of the alfredo (except what you set aside) over them. Add the last of your cheese mix, then top with the remaining chicken and spinach.
06 -
Add your top layer of noodles next. Use that saved 1.5 cups alfredo sauce to cover it all up. Sprinkle another half cup spinach over the top to wrap up your stack.
07 -
Put on the lid and cook everything on low for 4 hours.
08 -
Turn off your slow cooker. Cover the finished dish with 1.5 cups shredded mozzarella, close it again, and let it sit for 10 to 15 minutes so the cheese melts and the whole thing firms up for easy cutting.