01 - 
                Spread 1 1/2 cups marinara sauce in the bottom of the slow cooker.
              
              
              
                02 - 
                Add a layer of no-boil lasagna noodles, breaking them apart to fit as needed.
              
              
              
                03 - 
                In a medium bowl, combine ricotta cheese, parmesan cheese, egg, 1 cup mozzarella cheese, Italian seasoning, basil, salt, and pepper. Stir until well mixed.
              
              
              
                04 - 
                Spoon 1/3 of the cheese mixture over the noodles and spread evenly. Add another layer of noodles and sauce. Repeat layers two more times.
              
              
              
                05 - 
                Top with the remaining mozzarella cheese.
              
              
              
                06 - 
                Cover the slow cooker and cook on high for 3-4 hours or on low for 6-8 hours.
              
              
              
                07 - 
                Slice the lasagna, serve, and enjoy.