Recipes: Slow-cooker spinach lasagna

Preparation:   Preparation time: 20 mins Cooking time: 3 hr 30 mins Serving: 6 Ingredients: 1 cup ricotta 2 10-ounce packages chopped frozen spinach 1/4 cup minced fresh basil 1 cup Parmesan 3 cups jarred or homemade marinara sauce 6 regular lasagna noodles 2 cups grated part-skim mozzarella Instructions: In...