Slow Cooker Lasagna Recipe

Introduction

This slow cooker lasagna is your ticket to a comforting, crowd-pleasing meal with minimal hands-on effort. You can assemble it ahead of time and let your crockpot do the work, filling your home with amazing aromas. The end result is perfectly cooked, cheesy, and deeply flavorful lasagna that rivals the oven-baked version.

Prep & Cook Time

Prep Time: 30 minutes

Cook Time: 240 minutes (4 hours)

Total Time: 270 minutes (4.5 hours)

Servings: 10

Ingredients

• non-stick cooking spray
• 16 oz. lasagna noodles ((uncooked) I use Barilla brand – Regular lasagna noodles, not no boil noodles.)
• 1 lb. lean ground beef
• 1 white onion (diced)
• 1 tsp. salt
• ½ tsp. ground pepper
• 2 tsp. Italian seasoning
• ½ tsp. garlic powder
• 48 oz. Rao's Marinara Sauce ((two 24-oz. jars))
• 1 cup water
• 2 large eggs
• 2 cups shredded mozzarella
• 15 oz. whole milk ricotta
• 1 cup shredded parmesan
• ½ tsp. salt
• 1 tsp. dried parsley (or dried oregano or Italian seasoning)
• ½ tsp. garlic powder
• 2 cups mozzarella cheese
• dried parsley for garnish ((optional))

Instructions

1. Generously coat the inside of a 6-quart or larger slow cooker with non-stick cooking spray.
2. In a large skillet over medium-high heat, brown the lean ground beef with the diced white onion until the meat is fully cooked and the onion is softened. Drain any excess grease.
3. Stir the 1 tsp. salt, ½ tsp. ground pepper, 2 tsp. Italian seasoning, and ½ tsp. garlic powder into the cooked beef. Add both jars (48 oz.) of Rao’s Marinara Sauce and the 1 cup of water to the skillet. Stir well and let it simmer for 2-3 minutes. Remove from heat.
4. In a medium bowl, combine the ricotta cheese, 2 cups shredded mozzarella, 1 cup shredded parmesan, eggs, ½ tsp. salt, 1 tsp. dried parsley, and ½ tsp. garlic powder. Mix until fully combined.
5. To assemble in the slow cooker: Spread about 1 ½ cups of the meat sauce evenly over the bottom.
6. Arrange a single layer of uncooked lasagna noodles over the sauce, breaking them to fit as needed.
7. Spread half of the ricotta cheese mixture over the noodles.
8. Repeat the layers: sauce, noodles, and the remaining ricotta mixture.
9. Finish with a final layer of the remaining meat sauce.
10. After 4 hours, sprinkle the remaining 2 cups of mozzarella cheese evenly over the top. Cover and let it cook for an additional 15-20 minutes, or until the cheese is melted and bubbly.
11. Let the lasagna rest in the slow cooker (turned off) for at least 30 minutes before serving. Garnish with dried parsley if desired.

Variations

• Vegetable Boost: Sauté sliced mushrooms, zucchini, or spinach and layer them in with the cheese or meat layers.
• Spicy Kick: Add a pinch of red pepper flakes to the meat sauce while it simmers for a touch of heat.
• Different Meat: Substitute the ground beef with Italian sausage or a 50/50 mix of beef and sausage for a richer flavor.
• Individual Servings: Use small, personal-sized slow cookers or oven-safe ramekins to create single-serving portions, adjusting the cook time down significantly.

Tips for Success

• Spray Well: Ensure you coat the slow cooker thoroughly with non-stick spray to prevent the edges from sticking and make serving cleaner.
• Don’t Peek: Resist the urge to open the lid during the 4-hour cook time, as this releases heat and steam and will increase the cooking time.
• Use the Right Noodles: It’s crucial to use regular, uncooked lasagna noodles (not the “no-boil” or “oven-ready” variety) for the best texture and to properly absorb the sauce.
• Rest is Best: Allowing the lasagna to rest for the full 30 minutes after cooking is essential. It helps the layers set, making it much easier to slice and serve neatly.

Storage & Reheating

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave until hot, or cover and reheat a larger portion in a 350°F oven for 20-30 minutes.

FAQ

Can I use no-boil lasagna noodles?

No, this recipe is specifically designed for regular, uncooked lasagna noodles. No-boil noodles will become too soft and mushy with the long, moist cooking time.

Can I cook this on HIGH instead of LOW?

It is not recommended. Cooking on LOW allows the noodles to absorb liquid and cook through evenly without burning. Cooking on HIGH may result in overcooked edges and undercooked noodles in the center.

Do I really need to add the 1 cup of water?

Yes. The water is essential to create enough steam and liquid for the regular, uncooked noodles to properly hydrate and cook through in the slow cooker environment.

Can I assemble this ahead of time?

Absolutely. You can assemble the entire lasagna in the slow cooker insert, cover it tightly with plastic wrap, and refrigerate overnight. Let it sit on the counter for 30 minutes before cooking as directed.

Can I freeze the leftovers?

Yes. Let the lasagna cool completely, then slice and wrap individual portions tightly in plastic wrap and foil. Freeze for up to 3 months. Thaw in the refrigerator before reheating.

Why is my lasagna watery?

This usually happens if the slow cooker lid was opened during cooking, releasing steam, or if it wasn’t allowed to rest. The resting time allows the noodles to absorb any remaining excess liquid.