You know who never lets you down at dinnertime? The freezer aisle. When you’re craving cozy, homestyle lasagna without all the prep, frozen ravioli is the ultimate shortcut. Layer it in a slow cooker with a bright marinara and plenty of melty mozzarella, then let time do the work. Eight hours later, dinner is bubbling, cheesy, and ready to serve—with almost zero effort on your part.
Why Ravioli Is the Secret to Slow Cooker Lasagna
Lasagna always comes down to three essentials: pasta, sauce, and cheese. While no-boil noodles work well in the oven, their rigid shape isn’t ideal for a slow cooker. Ravioli, on the other hand, is made for this job. These tender pockets of pasta and cheese layer effortlessly, creating a relaxed, free-form lasagna that cooks evenly and stays perfectly soft.
Classic cheese ravioli delivers familiar comfort, but the variety available today means you can change things up every time. Spinach, mushroom, or artichoke ravioli are all delicious options—especially if you have extra veggies or bits of cheese you want to use up.
If you love the middle slices of traditional lasagna—the ultra-soft pasta, gooey cheese, and tangy tomato sauce—this recipe is absolutely for you. The slow cooker leans into that tender, saucy texture and turns it into the star of the dish.
A No-Stovetop Sauce That Simmer All Day
Most marinara sauces begin with sautéed onion and garlic on the stovetop, but this slow cooker version skips that step entirely. Since the lasagna cooks low and slow, the sauce has plenty of time to develop rich flavor on its own.
For the best taste, use high-quality canned tomatoes. A mix of diced and crushed tomatoes creates great texture, while garlic, Italian seasoning, salt, and a splash of balsamic vinegar add depth and brightness. Stir everything together in a bowl—it takes just minutes. Short on time? A jarred marinara you already love works just as well.
Start with a generous layer of sauce in the bottom of the slow cooker, then build relaxed layers of frozen ravioli and shredded mozzarella. No need to thaw anything or be precise—this dish is meant to be easy.
Slow Cooker Ravioli Lasagna
Serves: 8
Ingredients
- 3 (14.5-ounce) cans diced tomatoes, with juices
- 1 (28-ounce) can crushed tomatoes
- 2 cloves garlic, minced
- 2 teaspoons dried Italian seasoning
- 2 teaspoons kosher salt
- 1 teaspoon balsamic vinegar
- Cooking spray
- 2 (22-ounce) bags frozen cheese ravioli (do not thaw)
- 1 pound part-skim mozzarella cheese (about 4 cups), shredded
- Chopped fresh parsley, for garnish (optional)
Instructions
- In a large bowl, combine the diced tomatoes, crushed tomatoes, garlic, Italian seasoning, salt, and balsamic vinegar. Stir well.
- Lightly coat a 6-quart (or larger) slow cooker with cooking spray.
- Spread about 1½ cups of the tomato sauce over the bottom of the slow cooker.
- Add one-third of the frozen ravioli in an even layer, then sprinkle with about 1 cup of mozzarella.
- Repeat the layers of sauce, ravioli, and cheese two more times.
- Finish with the remaining sauce and top with the rest of the mozzarella.
- Cover and cook on LOW for about 8 hours, until the sauce is bubbling, the ravioli is tender, and the cheese is melted and lightly golden.
- Garnish with chopped parsley if desired, then scoop and serve.
Helpful Variations & Tips
- Make it meaty: Brown 1 pound of ground beef, turkey, or Italian sausage with 1 cup diced onion and 2 cloves minced garlic. Drain well and layer it between the ravioli and cheese.
- Use jarred sauce: Swap the homemade sauce for 3 (24-ounce) jars of your favorite pasta sauce for an even faster prep.
- Storage: Store leftovers in an airtight container in the refrigerator for up to 4 days.
This slow cooker ravioli lasagna is everything comfort food should be—warm, cheesy, and incredibly easy. It’s proof that with a little help from the freezer aisle, a satisfying homemade dinner is always within reach.