Crockpot Lasagna (Slow Cooker, No Boiling Noodles, 34g Protein)

Crockpot lasagna is the recipe that finally got lasagna onto a Tuesday in my house — the noodles go in dry, the slow cooker does the four hours, and you get real layers, a real meat sauce and 34 grams of protein a serving without turning the oven on.

I tested this five times to fix the two things that ruin slow cooker lasagna: watery sauce and mushy noodles. The fixes are small (a thicker sauce, regular noodles instead of no-boil, and a 20-minute rest with the lid off) and once you have them, it slices like the baked version of my baked ziti.

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Why this crockpot lasagna works when most of them turn to soup.

• The noodles go in dry, and they are regular noodles. Uncooked lasagna noodles soak up the sauce as they cook, which thickens everything and keeps the layers distinct. No-boil noodles are too thin for four hours and dissolve; the regular ones hold. Same trick I use in my lasagna soup, just in the other direction.
• Half beef, half Italian sausage in a thick sauce. Sausage brings the fennel and salt that make lasagna taste like a restaurant made it, and cooking the sauce down for a few minutes before it goes in means no puddle at the bottom. It is the same meat-sauce base as my baked spaghetti.
• It feeds eight for about two dollars a serving, with 34g protein each. A slow cooker full of lasagna is Sunday dinner plus lunches all week, and it reheats better than it has any right to. Check the numbers against your own targets in the protein calculator.

Here's what you'll need.

Ground beef, mild Italian sausage, a yellow onion, garlic, a jar of marinara plus a can of crushed tomatoes, whole-milk ricotta, an egg, parmesan, a big pile of shredded mozzarella, regular dry lasagna noodles, Italian seasoning, and fresh basil to finish.

Here's how it all comes together.

STEP 1 — BROWN THE BEEF AND SAUSAGE

Heat a large skillet over medium-high. Add the ground beef, sausage and onion and cook, breaking the meat into small crumbles, for 8 to 10 minutes until browned through and the onion is soft. Stir in the garlic for the last minute, then tip the pan and spoon off the excess fat — leaving it in is the number one cause of a greasy, watery lasagna.

STEP 2 — BUILD A THICK MEAT SAUCE

Stir in the marinara, crushed tomatoes, Italian seasoning, ½ teaspoon salt and ¼ teaspoon pepper. Simmer for 5 minutes so it thickens slightly — it should mound on a spoon, not run. A thin sauce is what turns crockpot lasagna into lasagna soup, so give it the five minutes.

STEP 3 — MIX THE RICOTTA LAYER

In a bowl, stir together the ricotta, egg, ½ cup of the parmesan, 1 cup of the mozzarella, the remaining ¼ teaspoon salt and a good grind of pepper. The egg sets the ricotta so it stays put in a layer instead of melting into the sauce.

STEP 4 — LAYER IT IN THE SLOW COOKER

Grease a 6-quart oval slow cooker. Spread 1 cup of meat sauce on the bottom, then a single layer of dry noodles, breaking them to fit (overlap is fine, gaps are not). Spread a third of the ricotta mixture over the noodles, then 1½ cups of sauce. Repeat two more times — noodles, ricotta, sauce — ending with the last of the sauce on top.

STEP 5 — TOP WITH CHEESE AND COOK ON LOW

Scatter the remaining 2 cups of mozzarella and ¼ cup parmesan over the top. Cover and cook on LOW for 4 hours. Do not use HIGH — the edges scorch before the middle noodles soften. The lasagna is done when a knife slides through the center noodles with no resistance and the sides are bubbling.

STEP 6 — REST 20 MINUTES, THEN SLICE

Turn the slow cooker off, take the lid off and let it sit for 20 minutes. This is the step nobody wants to do and everybody should: the noodles finish absorbing the sauce and the cheese sets, so it lifts out in a square instead of a scoop. Top with torn basil and serve.

If you want more slow cooker dinners built exactly like this one — Italian and Mediterranean flavors, real ingredients, hands-off cooking — this is the book I keep on the counter, the Ultimate Slow Cooker Mediterranean Diet Cookbook.

Things I learned while testing this recipe.

• Regular noodles, not no-boil, and not the fresh sheets. I tried all three. No-boil noodles went to mush by hour three; fresh pasta sheets fell apart. Standard dry lasagna noodles, straight from the box, come out tender with a little bite. Break them to fit the oval — they do not need to be pretty.
• Low for four hours is the whole recipe. On HIGH for two hours the edges turned dark and chewy while the center noodles were still firm. If your slow cooker runs hot (most newer ones do), check at 3½ hours. Six hours on low is too long — the layers collapse.
• Drain the meat and thicken the sauce. Slow cookers do not evaporate anything, so every drop of fat and liquid you put in is still there at the end. Spooning off the fat and simmering the sauce for five minutes is the difference between a slice and a ladle.
• A slow cooker liner or a good greasing saves the cleanup. Cheese welds itself to the sides after four hours. A liner or a heavy coat of cooking spray means the lasagna releases cleanly and the insert wipes out.

Why this is the lasagna I make now instead of the oven version.

• Twenty minutes of hands-on time. Brown the meat, stir two bowls, layer, walk away. The oven version has a boiling pot, a baking dish, foil, and 50 minutes of watching the top; this has a skillet and a slow cooker.
• Thirty-four grams of protein and 8 servings. Beef, sausage, ricotta and mozzarella add up fast. A slice with a green salad is a complete dinner, and the leftovers are the best lunch in the fridge on Wednesday.
• It works for a crowd and it works ahead. Assemble it the night before, refrigerate the insert, and start it at noon for a 4:30 dinner (add 30 minutes for the cold start). It feeds eight, and I have doubled the meat sauce and frozen half for the next one.

Here's what I'd serve with this.

• Air fryer Brussels sprouts — crispy, a little charred, and ready while the lasagna rests.
• Roasted cauliflower — a big tray of it is the vegetable side lasagna wants.
• Smashed cucumber salad — cold, crunchy and sharp against all that cheese.
• Mediterranean chickpea salad — make it while the slow cooker runs; it only gets better sitting.
• Fried cabbage — the unexpected side that everyone ends up going back for.

Just in case you have leftovers.

Storing: Cool the lasagna completely, then refrigerate slices in a covered container for up to 4 days. To freeze, wrap individual slices in foil and put them in a freezer bag for up to 3 months — they thaw overnight in the fridge and reheat cleanly.

Reheating: A slice reheats best covered in the microwave for 2 to 3 minutes with a spoonful of water alongside to keep the noodles soft, or in a covered dish at 350°F for 20 minutes. From frozen, 350°F covered for 35 to 40 minutes. The air fryer at 325°F for 8 minutes gives you crisp cheese edges.

More easy comfort food recipes...

Lasagna soup Baked ziti Crockpot beef stroganoff Baked spaghetti

If you like the set-and-forget idea, my crockpot mac and cheese and crockpot beef and noodles run on the same low-and-slow logic. And today's other new recipe is my cottage cheese flatbread — two ingredients, 26g protein, and the wrap I have been eating for lunch all month.

More slow cooker dinners with real Mediterranean flavor.

The Ultimate Slow Cooker Mediterranean Diet Cookbook is full of hands-off dinners like this one — lasagnas, stews, braises and pasta bakes that cook while you do something else and still taste like Sunday.

Get the cookbook on Amazon

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