Spray inside of slow cooker (or Instant Pot) with cooking spray
Pour 1/2 cup of the sauce in the bottom of the slow cooker
Add 1/3 of your cheese, spices, and pizza toppings
Top with 1/2 the broken lasagna noodles
Cover noodles with another layer of sauce
Add 1/3 of your cheese, spices, and pizza toppings
Top with remaining 1/2 of your broken lasagna noodles
Cover with the rest of your sauce and 1/2 cup of water
Add remaining cheese, spices, and pizza topping
Put the lid on and cook for 3-4 hours on low