01 -
Turn on the oven to 180°C (350°F). Coat a baking dish (23 x 33 cm / 9 x 13-inch) lightly with grease and put it aside.
02 -
In a pan over medium heat, soften the butter, then stir in the flour and cook for about 60 seconds. Gradually whisk in the milk, stirring until thickened. Mix in the parmesan cheese and a pinch of salt, then remove from the heat.
03 -
Grab a mixing bowl and stir together ricotta, mozzarella, the whisked egg, parsley, and salt. Set it aside for now.
04 -
In a skillet over medium heat, warm up the olive oil, then toss in the seafood along with salt, pepper, and parsley. Cook for about 3 minutes while stirring.
05 -
Spoon a thin layer of bechamel sauce into the base of your baking dish. Lay down some lasagna noodles. Spread a third of the cheese filling on top, followed by a third of the cooked seafood and bechamel sauce. Repeat those steps two more times, finishing with a layer of mozzarella and parmesan on top.
06 -
Pop the dish into the oven and bake for 35 minutes. If the top browns too fast, cover it with foil until the cheese is melted and golden.
07 -
Take the dish out of the oven and let it sit for a few minutes. This makes slicing and serving easier.