There is something mighty satisfying about a supper that asks so little of you and still comes out tasting like you fussed all afternoon. This slow cooker ravioli lasagna is one of those practical, comforting Midwestern-style meals that fits right into a busy week, using a bag of frozen ravioli and a few store-bought staples to make a bubbling, hearty main dish with hardly any chopping or stirring at all. It has that familiar red-sauce-and-cheese comfort folks love, but with the easy good sense of a crock on the counter doing the work for you.
Serve this with buttered green beans, a crisp salad, or a simple pan of roasted broccoli to balance all that rich cheese and sauce. If you want to stretch the meal for company or hungry farmhands, set out garlic bread or warm breadsticks for mopping up the extra marinara, and finish with iced tea or a light red wine if you like.
Slow Cooker 4-Ingredient Ravioli Lasagna
Servings: 6
Ingredients
1 (25 to 30 ounce) bag frozen cheese ravioli
1 (24 ounce) jar marinara sauce
1 (15 ounce) container ricotta cheese
2 cups shredded mozzarella cheese
Directions
1. Lightly grease the slow cooker insert, then spread a thin layer of marinara sauce over the bottom so the frozen ravioli do not stick or scorch.
2. Arrange a single layer of frozen ravioli straight from the bag over the sauce. Dollop part of the ricotta over the ravioli, spoon over some marinara, and sprinkle with some mozzarella.
3. Repeat the layers until all the ravioli, ricotta, and marinara are used, finishing with the remaining mozzarella on top.
4. Cover and cook on low for 3 to 4 hours, and no longer, until the ravioli are tender and heated through. Overcooking will make the pasta too soft.
5. During the last 15 minutes of cooking, let the mozzarella on top melt fully. Scoop and serve hot.
Variations & Tips
Meat Lover's Version: If you want a heartier supper, brown 1 pound of ground beef or Italian sausage in a skillet, drain it well, and layer it in with the sauce. It makes the dish a little more like the old baked lasagnas folks grew up with.
Sauce First Matters: Do not skip that layer of sauce on the bottom of the insert. Frozen ravioli can catch and scorch where they touch the hot crock, and that little bit of sauce protects them beautifully.
Watch the Clock: This recipe is best when cooked just until tender, usually 3 to 4 hours on low depending on your slow cooker. Older and newer crocks can run differently, so check at the 3-hour mark if yours cooks hot.
Cheese Balance: For neater scoops, spread the ricotta in small dollops instead of one thick layer. That way every serving gets some creamy richness without turning the middle heavy.
Make It Your Own: You can tuck in a layer of baby spinach, sautéed mushrooms, or a little extra Italian seasoning if you want to dress it up, but the plain 4-ingredient version is awfully dependable and just right for busy nights.