Step 1: Brown the Meat
In a skillet over medium heat, cook the ground beef or sausage until browned and cooked through. Drain any excess fat.
Stir in the marinara sauce, Italian seasoning, garlic powder, salt, and pepper. Simmer for 2–3 minutes to combine flavors.
Step 2: Layer the Ingredients
Spread a thin layer of the meat sauce on the bottom of your slow cooker to prevent sticking.
Add a layer of frozen ravioli (about half the package) on top of the sauce.
Spoon half of the remaining meat sauce over the ravioli.
Sprinkle 1 cup of shredded mozzarella cheese and half of the Parmesan cheese over the sauce. If using ricotta, dollop small spoonfuls evenly over the layer.
Repeat the layers: ravioli, meat sauce, and cheeses.
Step 3: Cook on Low
Cover the slow cooker and cook on low for 3–4 hours , or until the ravioli is tender and the cheese is bubbly. Avoid cooking on high, as the ravioli may overcook.
Step 4: Serve and Enjoy
Let the lasagna sit for 5–10 minutes before serving to allow the layers to set slightly.
Garnish with fresh parsley or extra Parmesan cheese if desired. Serve hot and enjoy the cheesy goodness!
