Making Slow Cooker Lasagna is straightforward if you follow these simple steps:

1. Cook the Meat: In a skillet over medium heat, brown the ground beef (or sausage) until fully cooked. Drain excess grease. Stir in Italian seasoning and season with salt and pepper.
2. Prepare the Sauce: Mix half of the marinara sauce with the cooked meat. Set the remaining sauce aside.
3. Mix Ricotta: In a bowl, combine ricotta cheese, egg, and a little salt and pepper. Mix until smooth and well blended.
4. Layer the Ingredients: Begin by spreading a thin layer of the meat mixture at the bottom of the slow cooker, followed by a layer of uncooked lasagna noodles. Break them to fit if necessary.
5. Add Cheese Mixture: Spread half of the ricotta mixture over the noodles, followed by a layer of marinara sauce, and then a sprinkle of mozzarella cheese.
6. Repeat Layers: Continue layering the remaining meat mixture, noodles, ricotta mixture, marinara sauce, and mozzarella cheese until all ingredients are used. The top layer should be mozzarella cheese and Parmesan.
7. Cook: Cover and cook on low for 4-6 hours or high for 2-3 hours until the cheese is melted and bubbly.
8. Let it Rest: Once done, turn off the slow cooker and let the lasagna rest for 15 minutes before slicing.
9. Garnish: Serve with fresh basil leaves on top for an added touch.

These steps will guide you in creating a delicious Slow Cooker Lasagna that your family will love!