
A delicious recipe for creamy Chicken Lasagna with mushrooms, spinach and rosemary layered with a creamy bechamel sauce. Vegetarian-adaptable. See notes for making ahead.
Preheat oven to 400F
If using dry pasta start your salted water to a boil, and par-cook the lasagna noodles to aldente.
(see notes for vegetarian) Cut chicken into 1/2 inch, bite-size pieces and season with 1 teaspoon salt and cracked pepper to taste. Saute in a skillet, on medium heat, with 1-2 tablespoons olive oil until golden brown, and cooked through. Place chicken in a bowl and set aside. Wipe out the pan and add a little more oil. Add mushrooms and onion and saute until tender, on med heat, about 7 min. Add garlic and rosemary, and saute 2 more minutes. Season with salt and pepper and lower heat to med-low, and saute until mushrooms release their liquid. Add chopped spinach, stir until wilted and add this to the chicken. Set aside.
In a medium saucepan melt butter on medium-low heat. Add flour and stir for 2-3 minutes on med heat until flour is golden. Whisk in milk one cup at a time. Add rosemary and stir constantly ( do not walk away) until it just comes to a simmer- this will thicken it. Add salt, nutmeg and white pepper. Stir until incorporated, set aside.
Whisk ricotta cheese with an egg, lemon zest, pepper and nutmeg. Set aside.
. Butter or grease a 9 x 13-inch baking dish. Pour ¾ cup bechamel sauce in the bottom and spread out. Place one layer of lasagna noodles. Cover with half of the ricotta mixture, spreading it evenly. Top with half of the chicken/mushroom filling, sprinkle with one-third of the parmesan cheese, and one-third of the fresh mozzarella cheese. Drizzle with 1 cup of bechamel sauce, Repeat, adding another single layer of lasagna noodles, lightly pressing down. Spread out the remainder of the ricotta cheese mixture, top with the remainder of the chicken mushroom filling, another third of the mozzarella cheese and Parmesan cheese and drizzle with another cup of bechamel. (Optional: at this point, you could drizzle with a little truffle oil -it’s delicious). Top with the last layer of lasagna noodles and pour the remainder of the bechamel sauce, spreading evenly. Add the last of the cheeses, and sprinkle with a little rosemary.
covered tightly with parchment and foil in a 400F oven for 40 minutes or until hot and bubbly. (Parchment prevents the foil from touching the lasagna which can leach aluminum. )Remove parchment and foil and bake uncovered until the top is golden, about 10-15 more minutes. Let rest from the oven 10-15 minutes before cutting, so it sets up.
Leftovers will keep up to 4 days in the fridge, or freeze for up to 3 months.