Mushroom Lasagna


Several years ago, I made a special lasagne. I’d just discovered lasagne made with béchemel sauce rather than pounds of gooey cheese. Mushrooms were on sale so I was inspired to create a memorable meal. Over the years, we’ve said to each other, “Remember that mushroom lasagne!” and smile fondly. But the recipe was misplaced…
This is not that recipe, but it is deliciously extravagant with mushroom delight. The way the noodles are layered is elegant: They are laid one over the other with filling and sauce between. To serve, just cut across the pan so you can lift out neat servings, each with curly noodle edges.

package of dried porcini mushrooms
dried porcini mushrooms




layers for lasagne
how to cut lasagne

Rich Mushroom Lasagna
lasagne with béchemel sauce

adapated from Cooks Illustrated
serves 12
  • ½ ounce dried porcini mushrooms, rinsed well
  • 1 cup water
  • ½ pound oyster mushrooms, cleaned, and cut into 1-inch pieces (about 2 cups)
  • 12 ounces king trumpet mushrooms, cleaned, and cut into ½-inch pieces (about 3 cups)
  • 10 ounces shiitake mushrooms, cleaned, stems removed (they are tough), and sliced ¼-inch thick (about 4 cups)
  • 1 pound cremini mushrooms, cleaned, and sliced ¼-inch thick (about 4 cups)
  • ½ pound cremini mushrooms, cleaned, and finely chopped, reserved
  • 8 Tablespoons unsalted butter, plus additional for greasing pan
    half for the mushrooms, half for the béchamel sauce
  • Salt and ground black pepper
  • 2 Tablespoons olive oil
  • 1 large red onion, chopped (about 2 cups)
  • 6 cloves garlic, minced or pressed through garlic press (about 1 Tablespoon plus 1 teaspoon)
  • 5 Tablespoons unbleached all-purpose flour
  • 4 cups milk
  • ¼ cup minced fresh parsley leaves
  • 2 Tablspoons minced fresh rosemary
  • 8 ounces fontina cheese , rind removed and shredded (about 2 ¼ cups)
  • 1 ½ ounces grated Parmesan cheese (about ¾ cup)
  • 12 lasagna noodles
  • grated lemon zest from 1 lemon

Cover porcinis with hot water in measuring cup. Soak for one hour. Lift mushrooms from liquid with fork and roughly chop (you should have about 3 Tablespoons). Set mushrooms and liquid aside.

Cook the mushrooms separately in butter. Add salt and pepper. Cook, stirring occasionally, until mushrooms are tender and most of liquid has evaporated. Transfer mushrooms to a large bowl and set aside to cool. Toss them together to mix well.

Heat 1 Tablespoon oil in a skillet over medium-high heat until shimmering Add onions and salt and  pepper Cook, stirring occasionally, until onions are browned around edges. Transfer onions to the bowl of mushrooms. Toss to mix well.

Coarsely chop the reserved cremini mushrooms in food processor. Heat 1 Tablespoon oil in the skillet over medium-high heat until shimmering. Brown the chopped cremini and stir until all moisture has evaporated.

Reduce heat to medium and add the porcini mushrooms, the garlic, salt, and pepper. Cook until garlic is fragrant.

Melt 4 Tablespoons butter. Add flour and cook, stirring constantly. Slowly add reserved porcini soaking liquid, scraping pan bottom to loosen browned bits. Add milk. Increase heat to medium-high and bring mixture to boil. Reduce heat to medium-low and simmer uncovered until sauce has thickened and reached consistency of heavy cream. Remove from heat and stir in the parsley and rosemary. There should be about 4 cups.

Adjust oven rack to middle position and heat oven to 400°F.

Combine Fontina and Parmesan in medium bowl.

Cook noodles very al denté. Rinse in cold water, and dry on paper towels. Grease a baking dish with butter.

Using rubber spatula, evenly distribute a quarter of the mushroom sauce in bottom of baking dish; position 3 noodles on top of sauce. Spread one quarter of the mushroom-onion mixture and one quarter of the cheese; sauce, noodles, mushrooms, cheese… Repeat layers, placing each of the 3 noodles directly over the ones below: don’t overlap them, don’t lay them crosswise. Cover lasagna with foil.  Place in oven and turn heat down to 375°F. Bake until bubbling, about 30 minutes.

Cool  the lasagne for 15 minutes, then cut crosswise to serve.

Notes: the mushroom flavor of the sauce is greatly enhanced by the porcini, its soaking water, and the chopped baby bellas (cremini).
The king trumpets would have been better sliced very thinly: they are quite chewy compared to the other mushrooms.

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5 thoughts on “Mushroom Lasagna

  1. Oh, Tess, what a gorgeous lasagna!

    I’ve never made one with mushrooms only, something to try for sure! I much prefer a lasagna based on bechamel instead of the tons of cheese, it is lighter and I don’t feel as bloated after enjoying a couple of pieces ;-)

    hope you will have a great weekend!

    • It was from the old Cook’s Talk forum that I discovered lasagne with bechamel! I think it was from someone’s recipe there that the idea of an all mushroom lasagne came to me. Unfortunately that recipe is gone…
      This one is pretty good though.
      ≥^!^≤

  2. This one looks über umami! Especially wonderful that you have used a combination of mushrooms. Seeing them peek out of the bechamel makes my mouth water. I remember seeing a tv chef blitz dried porcini in a blender ending up with a potent mushroom powder which he added to stocks and sauces. I love thyme and nutmeg with mushrooms – but wait- you used rosemary. I must try that. I love rosemary. I’m making rosemary and walnut biscotti today.
    Enough non-sequiturs for now. <3 CxX

  3. Yes, the porcini made for a very flavorful sauce. I’ll bet one could make a nice mushroom lasagne with plain old (cheap) creminis. What a good idea to whir the porcini to powder: I’m thinking it would thicken up the bechamel with some amazing umami.

    The rosemary was a matter of what I had on hand: I have a pot growing leggy in my sunny living room window, but it’s winter sun. I’ll have to trim it back when it goes outside in the spring so I might as well use it…

    My dad loved Finnish korpus dunked in coffee. Rosemary and walnut biscotti sound so elegant.
    ≥^!^≤

  4. Pingback: Lasagna Bolognese « Tess's Japanese Kitchen

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