Layer 1: Spread a thin layer of meat sauce on the bottom of the crockpot.
Layer 2: Add a layer of uncooked lasagna noodles, breaking them as needed to fit.
Layer 3: Spread 1/3 of the ricotta cheese mixture over the noodles.
Layer 4: Top with 1/3 of the meat sauce.
Repeat Layers: Continue layering noodles, cheese mixture, and meat sauce until all ingredients are used, ending with a layer of meat sauce on top.
Add Cheese Topping: Sprinkle additional shredded mozzarella cheese evenly over the top.