This rich and creamy lasagna keeps a hungry crowd happy.

All of this together makes for a rich and decadent lasagna, one your whole family will enjoy.

This is a bechamel-only lasagna (i.e.

Southern Living White Lasagna sliced and ready to serve

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there is no ricotta), so every layer is super creamy and smooth.

Ingredients

15lasagna noodles(from 1 [1-lb.]

fresh baby spinach(about 5 cups packed)

1/2cup(4 oz.

Southern Living White Lasagna ingredients

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)unsalted butter

1/2cup(about 2 1/8 oz.

Meanwhile, heat 1 tablespoon of the oil in a large skillet over medium-high.

Transfer with a slotted spoon to a medium bowl and set aside.

Southern Living White Lasagna soaking the noodles in the baking dish

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Add remaining 2 tablespoons oil to skillet and add mushrooms.

Cook, stirring occasionally, until mushrooms are browned, 6 to 8 minutes.

Add water and spinach; cook, stirring occasionally, until spinach is wilted, about 3 minutes.

Southern Living White Lasagna cooking the sausage

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Transfer to bowl with sausage; stir to combine and set aside.

Melt butter in a medium saucepan over medium.

Add flour and cook, whisking constantly, for 1 minute.

Southern Living White Lasagna cooking the mushrooms

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Gradually pour in milk, whisking constantly.

Add bay leaves, nutmeg, and remaining 1 1/2 teaspoons salt and 1/2 teaspoon pepper.

Bring to a simmer over medium, whisking often.

Southern Living White Lasagna adding the spinach to the mushrooms

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Simmer, whisking often, until thickened, about 2 minutes.

Remove from heat, discard bay leaves, and gradually whisk in 1/2 cup of the Parmesan until smooth.

Preheat oven to 375F.

Southern Living White Lasagna cooking the roux for the sauce

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Drain lasagna noodles and wipe baking dish dry.

Coat baking dish with cooking spray.

Spread 1/2 cup of the white sauce in bottom of dish.

Southern Living White Lasagna adding the milk to the roux

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Arrange lasagna noodles over sauce to cover in an even layer, breaking noodles as needed to fit.

Scatter 1 1/2 cups of the sausage mixture over noodles.

Pour 1 heaping cup of the white sauce over sausage mixture and sprinkle with 1 cup of the mozzarella.

Southern Living White Lasagna adding the cheese to the sauce

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Coat a sheet of foil with cooking spray and cover baking dish tightly with foil (greased side-down).

Bake in preheated oven for 30 minutes.

Remove foil and continue baking until golden and bubbling around the edges, about 15 minutes.

Southern Living White Lasagna spreading the sauce in the bottom of the pan

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Remove from oven and let cool for 15 minutes before slicing.

Garnish with parsley and serve.

Recipe Tips From TheSouthern LivingTest Kitchen

Southern Living White Lasagna adding the mushroom layer

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Southern Living White Lasagna adding the white sauce and cheese layer to the lasagna

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Southern Living White Lasagna assembled and ready to bake

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Southern Living White Lasagna baked and ready to serve

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Southern Living White Lasagna sliced and ready to serve

Credit:Morgan Hunt Glaze; Food Stylist: Julian Hensarling; Prop Stylist: Phoebe Hausser