I always thought lasagna needed a layer of ricotta mixed with egg and Parmesan. Then I came across a home cook who replaced that mixture with béchamel after discovering the ricotta had gone bad, and the swap changed how they made lasagna.
Reddit user u/BobCatsHotPants layered the white sauce between pasta and ragù, creating a creamy layer without the thicker texture of ricotta. Parmesan went into the sauce too, which means the finished version was closer to a Mornay than a plain béchamel.`\

Start With Butter, Flour, and Milk
Béchamel begins with butter and flour cooked together before milk is added.
For this lasagna, the cook used half a stick of butter and 1/3 cup flour, browning the mixture before adding enough milk to form the sauce. Fresh-ground nutmeg, salt, and pepper went in next.
Instead of stopping there, they added 6 ounces of freshly grated Parmesan. Cheese added to béchamel turns it into a Mornay-style sauce, giving the lasagna both the fluid texture of a white sauce and the flavor of Parmesan.
Layer the White Sauce With Ragù
The meat layer starts with crumbled Italian sausage. The cook added 1 1/2 teaspoons of sugar while frying it, then poured in a favorite prepared ragù and let the mixture simmer for about 10 minutes.
Cooked lasagna noodles are layered with the ragù and white sauce rather than adding a separate ricotta mixture between the sheets.
The béchamel spreads across the pasta instead of sitting in distinct curds, so each layer gets sauce from edge to edge.
Ricotta Isn’t the Only Way to Build Lasagna
Using béchamel in lasagna isn’t just a substitute invented when the ricotta runs out.
Different Italian lasagna traditions use different fillings. In Emilia-Romagna, lasagne alla Bolognese pairs ragù with béchamel, while ricotta appears in lasagna traditions associated with Naples and other parts of southern Italy.
That distinction explains why cooks can have such different ideas about what belongs between the pasta sheets. Switching from ricotta to béchamel changes the texture, but it doesn’t make the dish an odd version of lasagna.
Finish With Mozzarella and Parmesan
After building the ragù and white-sauce layers, the cook finished the top with another noodle layer, diced tomatoes, oregano, grated mozzarella, and fresh Parmesan.
The lasagna baked at 375°F for about 50 minutes under parchment and foil. There was no final uncovered bake or broil in the original version.
Ricotta still has a place in lasagna, but béchamel creates a different kind of layer. Instead of a thick cheese filling between the noodles, you get a sauce that spreads through the ragù and pasta—and once I understood the difference, replacing ricotta made a lot more sense.
Would you replace ricotta with béchamel in lasagna, or do you want both between the layers?
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