Slow Cooker Ravioli Lasagna (Easy)

Name: Slow Cooker Ravioli Lasagna (Easy)
Cuisine: European, Italian, Mediterranean
Ingredients: 1 pound lean ground beef, cooked, drain fat; 22-24 ounce frozen bag of your favorite cheese ravioli; 24 ounce jar of your favorite spaghetti sauce (or homemade); 2 cups shredded mozzarella cheese (or Italian cheese blend); 1 1/2 teaspoons of favorite Italian seasoning blend; salt & pepper to taste; customize the flavor by adding your favorite Italian seasonings; chopped onion and fresh garlic minced (2 cloves) browned with the beef is a great addition for added flavor