1. Prepare the Meat Sauce (if using):
- Cook the Meat: In a skillet over medium heat, cook the ground beef (or Italian sausage) until browned. Drain any excess fat.
- Add Vegetables: Add the chopped onion and minced garlic to the skillet. Cook until the onion is translucent and softened.
- Add Sauces and Seasonings: Stir in the marinara sauce, tomato sauce, diced tomatoes, Italian seasoning, basil, oregano, salt, and pepper. Simmer for 5-10 minutes to allow the flavors to meld.
2. Assemble the Lasagna in the Crockpot:
- Layer Ingredients:
- First Layer: Spread a thin layer of the meat sauce (or marinara sauce if not using meat) on the bottom of the crockpot.
- First Layer of Ravioli: Place a single layer of frozen ravioli over the sauce.
- Cheese Layer: Spoon dollops of ricotta cheese over the ravioli, then sprinkle with shredded mozzarella and Parmesan cheese.
- Optional Veggies: If using spinach, sprinkle some over the cheese layer.
- Repeat Layers:
- Continue layering in the following order: sauce, ravioli, ricotta cheese, mozzarella cheese, Parmesan cheese, and spinach (if using). Repeat until all ingredients are used, finishing with a layer of cheese on top.
3. Cook the Lasagna:
- Cover and Cook: Cover the crockpot with the lid. Cook on low for 4-6 hours, or until the ravioli is cooked through and the cheese is melted and bubbly.
- Check for Doneness: The lasagna is done when the ravioli is tender and the cheese is fully melted. If needed, you can cook for an additional 30 minutes.
4. Serve:
- Cool Slightly: Let the lasagna sit for 10 minutes before serving to allow it to set.
- Serve: Scoop out portions with a large spoon or spatula. Serve hot, and enjoy with a side salad or garlic bread.
Tips for the Perfect Crockpot Ravioli Lasagna:
- Frozen Ravioli: Use frozen ravioli to simplify the preparation. Fresh ravioli can also be used but might require less cooking time.
- Meat Sauce Option: If you prefer a meatless version, you can skip the meat sauce and use just the marinara and tomato sauce. You can also add more vegetables like mushrooms, bell peppers, or zucchini.
- Cheese Variations: Feel free to use different cheeses like fontina, gouda, or a blend of Italian cheeses for varied flavors.
- Slow Cooker Size: Ensure your crockpot is large enough to accommodate the layers. A 5-6 quart crockpot works well for this recipe.
- Check for Overflows: If your crockpot is on the smaller side, be cautious about overfilling. You might need to adjust the number of layers or cook in batches.
Crockpot Ravioli Lasagna is a convenient and flavorful meal that’s perfect for busy weeknights. With minimal preparation and easy cleanup, you can enjoy a comforting, cheesy lasagna with all the rich flavors of a traditional recipe.