Ingredients
Equipment
Method
Prepare the White Sauce
- Melt 1/2 cup unsalted butter over medium heat. Whisk in 1/2 cup all-purpose flour and cook for 1-2 minutes. Gradually add 4 cups of milk, stirring until thickened.
- Stir in 1/4 teaspoon nutmeg, 1/2 teaspoon salt, and 1/4 teaspoon black pepper.
Prepare the Vegetable Filling
- Heat 1 tablespoon olive oil in a skillet. Sauté 1 chopped onion for 3-4 minutes. Add 2 minced garlic cloves, 1 chopped red bell pepper, 1 chopped yellow bell pepper, and 1 chopped zucchini. Cook for 4-5 minutes.
- Stir in thawed spinach and season with 1/4 teaspoon salt and 1/4 teaspoon black pepper.
Combine Cheese Filling
- In a bowl, combine 15 ounces ricotta cheese, 1/2 cup grated Parmesan, and 1 lightly beaten egg. Fold in cooled vegetable mixture.
Cook Lasagna Noodles
- Boil water and cook 9 lasagna noodles until al dente (about 8-10 minutes). Drain and lay flat to cool.
Assemble Lasagna
- Preheat oven to 375°F. Spread a layer of white sauce in a greased baking dish. Layer 3 noodles, half of the filling, more sauce, and 1 cup mozzarella. Repeat layers and finish with remaining noodles and sauce.
Bake
- Cover with foil and bake for 25 minutes. Remove foil and bake for another 20-25 minutes until golden and bubbly.
Cool Before Serving
- Let the lasagna cool for 10-15 minutes before slicing to enhance flavors and hold layers together.
Notes
Ensure the spinach is thoroughly drained to prevent a soggy lasagna. Cook noodles until al dente to maintain structure while baking.
