Creamy Mushroom Lasagna: Italian Pasta Bake
Traditional Italian lasagne typically rely on a slow-cooked ragu or a spinach and ricotta filling. This version of creamy mushroom lasagna departs from those norms by using a béchamel sauce combined with sautéed mushrooms. Use no-boil lasagna sheets to save time during assembly. This shortcut allows the pasta to absorb the moisture from the milk-based sauce during the 45 minutes of cooking, ensuring the sheets are tender without requiring a separate boiling pot.
The result is a rich, savoury bake with a golden, bubbling top. Cook the butter and plain flour for 1 minute before adding the 500 ml of milk to remove the raw flour flavour. This step is essential for a smooth, professional sauce. Let the dish rest, covered, for 10 minutes after it leaves the oven at 190°C (375°F). This pause allows the layers to set so you can cut clean squares without the filling sliding apart.
Creamy Mushroom Lasagna: Italian Pasta Bake
Recipe cardIngredients
Instructions
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Sauté the aromatics
Preheat your oven to 190°C (375°F). Heat the olive oil in a large frying pan over medium heat. Sauté the chopped onion and garlic for 3 minutes until the onion becomes translucent to ensure a soft texture.
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Cook the mushrooms
Add the sliced mushrooms, half the salt, half the pepper, and the nutmeg to the pan. Cook for 8 minutes, stirring occasionally. You must wait until the mushrooms release their liquid and it evaporates completely to avoid a watery lasagna.
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Make the béchamel
Melt the butter in a saucepan and whisk in the flour. Cook for 1 minute to remove the raw flour flavour. Gradually whisk in the milk, remaining salt, and pepper, simmering for 5-7 minutes until the sauce is smooth and velvety.
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Combine the filling
Add the cooked mushroom mixture into the saucepan with the béchamel. Heat the mixture for 2 minutes until the ingredients are well combined. Taste the sauce now and adjust the seasoning to ensure the flavours are balanced.
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Assemble the layers
Lightly grease the bottom of a 23 x 33 cm baking dish with sauce to prevent sticking. Layer three lasagna sheets, then spread the mushroom sauce, mozzarella, and Asiago. Repeat this process two more times and top with the remaining cheese.
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Bake the lasagna
Cover the dish with foil and bake for 25 minutes. Remove the foil and bake for a further 10 minutes. The top should be golden and bubbling, which indicates the pasta is cooked and the cheese is caramelised.
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Rest and serve
Take the dish from the oven and let it rest, covered, for 10 minutes. This allows the layers to set so you can slice the lasagna without it falling apart. Garnish with chopped parsley if you wish.
Check the consistency of your béchamel as it simmers. If the sauce feels too thin to hold the layers, whisk in a tablespoon of flour and simmer for one more minute. A thick sauce prevents the lasagna from becoming soggy during the baking process.
How it differs from the traditional method
This version replaces the acidic tomato sauce with a creamy béchamel for a richer, more savoury profile. Use a traditional red sauce if you prefer a lighter, tangier dish. The no-boil sheets reduce preparation time but require sufficient sauce to hydrate the pasta during the baking process.
What to serve with it
Serve this dish with a crisp mixed-leaf salad tossed in a lemon-vinaigrette to cut through the richness of the cheese. You may also pair it with homemade garlic focaccia or crusty sourdough bread to soak up the remaining sauce from the baking dish.
Nutrition per serving
- Calories
- 540
- Protein
- 22.4 g
- Carbs
- 31.8 g
- Fat
- 32.1 g
- Fiber
- 3.2 g
- Sugar
- 8.5 g
Estimated, and offered as a guide rather than a medical figure.
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Questions people ask
What is the best recipe for mushroom lasagna?
A version using Baby Bella mushrooms and a nutmeg-infused béchamel provides the best balance. Sautéing the mushrooms until their liquid evaporates ensures the sauce remains thick and the pasta does not become soggy during the 35 minutes of baking.
Can you give me a recipe for mushroom lasagna with white sauce?
Use 30 g of butter and 30 g of flour to create a roux before adding 500 ml of milk. This white sauce forms the creamy base that binds the layers of mushrooms and mozzarella together.
Can you give me a recipe for mushroom lasagna with red sauce?
Replace one-third of the béchamel with a thin tomato-herb sauce. Incorporating fresh basil during the assembly process adds a tangy contrast to the earthy mushrooms and rich Asiago cheese.
About the author
Mary C. Rivero
Mary C. Rivero specializes in comforting home‑cooked meals, from hearty pastas and sheet‑pan dinners to quick weeknight snacks. Her recipes feature clear, step‑by‑step directions and practical tips, helping readers create flavorful dishes with confidence and ease.
