Slow Cooker Ravioli Lasagna

Ingredients:

• 1 bag (25 oz) frozen cheese ravioli
• 1 pound ground beef or Italian sausage
• 1 jar (24 oz) marinara sauce
• 1 can (14.5 oz) diced tomatoes, drained
• 1 teaspoon Italian seasoning
• 2 cups shredded mozzarella cheese
• 1 cup grated Parmesan cheese
• Fresh basil leaves for garnish (optional)

Instructions: