Ingredients
Scale
- 2½ tablespoons olive oil
- 1 cup chopped onion
- 2 tablespoons minced garlic
- 8 ounces white mushrooms, thinly sliced
- 1 teaspoon dried basil
- 1 teaspoon dried oregano
- ½ teaspoon red pepper flakes
- 1¼ teaspoons kosher salt, divided
- 1 (6-ounce) bag fresh baby spinach
- 2 cups shredded cooked chicken
- 2 cups low-sodium chicken stock
- ¼ cup all-purpose flour
- 2 cups whole milk
- ¼ teaspoon ground nutmeg
- ½ cup shredded Parmesan cheese
- 8 oven-ready lasagna noodles
- 1¼ cups shredded mozzarella cheese
Instructions
- Preheat the oven to 375°F (190°C).
- Heat olive oil in a large skillet and sauté the onion until softened.
- Add garlic and cook until fragrant.
- Stir in mushrooms, basil, oregano, red pepper flakes, and half of the salt. Cook until mushrooms are browned.
- Add spinach and cook until wilted.
- Stir in the shredded chicken and remove from heat.
- In a saucepan, whisk together the chicken stock and flour until smooth.
- Gradually whisk in the milk, remaining salt, and nutmeg.
- Cook until thickened, then stir in the Parmesan cheese.
- Spread a thin layer of sauce into a greased 9×13-inch baking dish.
- Layer noodles, chicken mixture, and sauce. Repeat until all ingredients are used.
- Finish with the remaining sauce and sprinkle mozzarella evenly on top.
- Cover with foil and bake for 35 minutes.
- Remove the foil and bake for another 15–20 minutes until golden and bubbly.
- Let the lasagna rest for 15 minutes before slicing and serving.
Notes
- Drain excess moisture from the mushrooms and spinach to prevent a watery lasagna.
- Let the lasagna rest for at least 15 minutes before slicing for cleaner layers.
- Freshly grated Parmesan and mozzarella provide the best flavor and melting texture.
- Prep Time: 25 minutes
- Cook Time: 55 minutes
- Category: Dinner
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 8 servings
- Calories: 485 per serving
Keywords: chicken mushroom spinach lasagna, creamy chicken lasagna, white sauce lasagna, spinach chicken lasagna, easy lasagna recipe