Best Sausage Mushroom Lasagna – Easy 45-Minute Dinner

There are some dinners that just feel like a warm hug on a plate, and this Sausage And Mushroom Lasagna is exactly that. I remember the first time I made it for my family—it was one of those chaotic evenings where homework was scattered everywhere, and someone was crying over a lost shoe. I needed something that would come together without a fuss but still taste like I'd spent hours in the kitchen. This lasagna delivered.

The combination of savory Italian sausage, earthy mushrooms, and creamy ricotta layered between tender noodles and bubbling mozzarella is pure magic. It's the kind of meal that makes everyone gather around the table a little faster. And the best part? You don't have to boil the noodles first—they cook right in the sauce, saving you time and dishes.

Whether you're feeding a hungry family or meal-prepping for the week, this lasagna is a winner. It's forgiving, adaptable, and always a hit. So grab your apron, and let's make some comfort food together.

About the Ingredients

1 lb (450g) Italian sausage, casings removed

Use sweet or hot Italian sausage depending on your heat preference. If you can't find it, ground pork with 1 tsp fennel seeds and 1 tsp paprika works well.

8 oz (225g) cremini mushrooms, sliced

Cremini (baby bella) mushrooms add earthy depth. White button mushrooms or a mix of wild mushrooms are great substitutes.

1 small yellow onion, diced

Yellow onions are sweet and mellow. A shallot or leek can be used for a milder flavor.

3 cloves garlic, minced

Fresh garlic is best, but 1 tsp garlic powder can be used in a pinch.

1 (24 oz / 680g) jar marinara sauce

Choose a high-quality marinara with no added sugar. You can also use crushed tomatoes with Italian herbs.

1 (15 oz / 425g) container ricotta cheese

Whole-milk ricotta gives the creamiest texture. For a lighter option, use part-skim. Cottage cheese blended smooth is a good substitute.

1 large egg

The egg binds the ricotta mixture. For an egg-free version, omit it and add 2 tbsp cornstarch.

1/2 cup (50g) grated Parmesan cheese

Freshly grated Parmesan melts better and has more flavor. Pecorino Romano is a sharper alternative.

2 cups (200g) shredded mozzarella cheese

Low-moisture mozzarella is ideal for melting. Shred your own for the best melt and to avoid anti-caking agents.

12 no-boil lasagna noodles

These are oven-ready noodles that soften during baking. If using traditional noodles, boil them first according to package directions.

2 tbsp olive oil

Use extra-virgin olive oil for sautéing. Avocado oil is a neutral substitute.

1 tsp dried oregano

Dried oregano adds classic Italian flavor. Fresh oregano (1 tbsp) can be used if available.

1/2 tsp salt

Adjust to taste, especially if your sausage and marinara are already salty.

1/4 tsp black pepper

Freshly ground black pepper is best.

Tips & Tricks

Avoid watery lasagna

Make sure to squeeze excess moisture from the ricotta if it looks watery, and let the sausage mixture simmer until thickened.

Don't overcook

Bake just until the top is golden and the edges are bubbling—overbaking will dry it out.

Let it rest

Allow the lasagna to rest for 10 minutes before slicing. This helps it hold its shape and prevents a messy first cut.

Step-by-Step Instructions

1. Preheat and Prep

Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with a little olive oil or cooking spray. This prevents sticking and makes serving easier.

2. Brown the Sausage

In a large skillet over medium-high heat, heat 2 tbsp olive oil. Add the Italian sausage (casings removed) and cook, breaking it up with a spoon, until browned and cooked through, about 5-7 minutes. Use a meat thermometer to ensure it reaches 160°F (71°C).

3. Sauté Vegetables

Add the sliced mushrooms, diced onion, and minced garlic to the skillet with the sausage. Cook for 5-6 minutes until the mushrooms have released their liquid and are golden brown, and the onions are translucent. Stir in the oregano, salt, and pepper.

4. Simmer the Sauce

Pour the marinara sauce into the skillet. Stir to combine, then reduce heat to low and let it simmer for 5 minutes. This allows the flavors to meld and the sauce to thicken slightly.

5. Mix the Ricotta

In a medium bowl, combine the ricotta cheese, egg, and 1/4 cup of the Parmesan cheese. Stir until well blended. Season with a pinch of salt and pepper.

6. Assemble the Lasagna

Spread a thin layer of the meat sauce (about 1 cup) on the bottom of the prepared baking dish. Arrange 4 no-boil lasagna noodles over the sauce, breaking them if needed to fit. Spread half of the ricotta mixture over the noodles, then top with 1/3 of the remaining meat sauce and 1/3 of the mozzarella. Repeat the layers: 4 noodles, remaining ricotta, half of the remaining sauce, and half of the remaining mozzarella. Finish with the last 4 noodles, the remaining sauce, and the remaining mozzarella. Sprinkle the rest of the Parmesan on top.

7. Bake to Perfection

Cover the dish with aluminum foil and bake for 25 minutes. Then remove the foil and continue baking for 10-15 minutes until the top is golden brown and the edges are bubbling. The internal temperature should be 165°F (74°C).

8. Rest and Serve

Remove from the oven and let the lasagna rest for 10 minutes. This allows it to set, making it easier to slice. Cut into 6 squares and serve warm.

Delicious Variations

Vegetarian

Omit the sausage and add 2 cups of chopped spinach or zucchini for extra veggies.

Spicy

Use hot Italian sausage and add 1/2 tsp red pepper flakes to the sauce.

Cheese Lovers

Add a layer of provolone or smoked mozzarella for extra cheesy goodness.

How to Store Sausage And Mushroom Lasagna

Frequently Asked Questions

I hope this Sausage And Mushroom Lasagna becomes a favorite in your home like it is in mine. Give it a try and let me know how it turns out in the comments below. Happy cooking, and remember—parenting is a journey, not a perfection.

Sausage And Mushroom Lasagna

Sausage And Mushroom Lasagna: a hearty, cheesy comfort food that's easy to make and perfect for busy weeknights.

★★★★½ 4.8 (127 ratings)

15 minPrep time35 minCook time6Servings285 kcalCalories

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🧂 Ingredients

• 1 lb (450g) Italian sausage, casings removed
• 8 oz (225g) cremini mushrooms, sliced
• 1 small yellow onion, diced
• 3 cloves garlic, minced
• 1 (24 oz / 680g) jar marinara sauce
• 1 (15 oz / 425g) container ricotta cheese
• 1 large egg
• 1/2 cup (50g) grated Parmesan cheese
• 2 cups (200g) shredded mozzarella cheese
• 12 no-boil lasagna noodles
• 2 tbsp olive oil
• 1 tsp dried oregano
• 1/2 tsp salt
• 1/4 tsp black pepper

📋 Instructions

1. 1Preheat and Prep — Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with a little olive oil or cooking spray. This prevents sticking and makes serving easier.
2. 2Brown the Sausage — In a large skillet over medium-high heat, heat 2 tbsp olive oil. Add the Italian sausage (casings removed) and cook, breaking it up with a spoon, until browned and cooked through, about 5-7 minutes. Use a meat thermometer to ensure it reaches 160°F (71°C).
3. 3Sauté Vegetables — Add the sliced mushrooms, diced onion, and minced garlic to the skillet with the sausage. Cook for 5-6 minutes until the mushrooms have released their liquid and are golden brown, and the onions are translucent. Stir in the oregano, salt, and pepper.
4. 4Simmer the Sauce — Pour the marinara sauce into the skillet. Stir to combine, then reduce heat to low and let it simmer for 5 minutes. This allows the flavors to meld and the sauce to thicken slightly.
5. 5Mix the Ricotta — In a medium bowl, combine the ricotta cheese, egg, and 1/4 cup of the Parmesan cheese. Stir until well blended. Season with a pinch of salt and pepper.
6. 6Assemble the Lasagna — Spread a thin layer of the meat sauce (about 1 cup) on the bottom of the prepared baking dish. Arrange 4 no-boil lasagna noodles over the sauce, breaking them if needed to fit. Spread half of the ricotta mixture over the noodles, then top with 1/3 of the remaining meat sauce and 1/3 of the mozzarella. Repeat the layers: 4 noodles, remaining ricotta, half of the remaining sauce, and half of the remaining mozzarella. Finish with the last 4 noodles, the remaining sauce, and the remaining mozzarella. Sprinkle the rest of the Parmesan on top.
7. 7Bake to Perfection — Cover the dish with aluminum foil and bake for 25 minutes. Then remove the foil and continue baking for 10-15 minutes until the top is golden brown and the edges are bubbling. The internal temperature should be 165°F (74°C).
8. 8Rest and Serve — Remove from the oven and let the lasagna rest for 10 minutes. This allows it to set, making it easier to slice. Cut into 6 squares and serve warm.

👨‍🍳 Chef's Note: For an even richer flavor, use a combination of sweet and spicy Italian sausage.

Servings: 6

Cuisine: Italian-American

Course: Main Course

Nutrition (per serving): 285 kcal · 12g protein · 22g carbs · 9g fat

Written by Aisha Okafor
Aisha writes about parenting and child development, sharing insights from her own journey raising two kids. She offers realistic advice on navigating the ups and downs of family life, from tantrums to teen years.