Roasted Asparagus and Mushroom Vegetarian Lasagna

This rich and creamy mouth-watering lasagna is extra cheesy and has layers of roasted asparagus and mushrooms smothered in a blend of 3 cheeses. Ideal for large families or entertaining friends. Split the recipe using 2 smaller casserole dishes, and freeze one to enjoy at a later date.

• Preparation Time: 40 mins
• Cooking Time: 35 mins
• Total Time: 1 hr 15 mins
• Calories: 510 Calories

Ingredients

• 1 teaspoon salt
• ⅛ teaspoon ground cloves
• 3 cups milk
• 2 cups water
• ¼ teaspoon ground black pepper
• 3 tablespoons minced garlic
• 1 cup grated Parmesan cheese
• 2 cups shredded mozzarella cheese
• 2 cups shredded Cheddar cheese
• cooking spray
• 4 tablespoons extra-virgin olive oil, divided
• 4 tablespoons salted butter
• 2 cups thinly sliced red onions
• 5 pounds asparagus, trimmed and cut into 1-inch pieces
• 4 pounds white mushrooms, sliced
• 24 oven-ready lasagna noodles

Recipe Instructions

Step 1

Preheat the oven to 450 degrees F (230 degrees C).

Step 2

Toss asparagus, mushrooms, and 2 tablespoons olive oil in a bowl to coat. Transfer to a baking sheet.

Step 3

Bake in the preheated oven until browned, about 10 minutes. Reduce oven heat to 350 degrees F (175 degrees C).

Step 4

Melt butter in a saucepan over medium heat. Stir in milk, salt, black pepper, and cloves. Bring to a boil, whisking constantly, until thickened, about 2 minutes. Remove sauce from heat and whisk in water.

Step 5

Combine remaining olive oil, onions, and garlic in a large skillet over medium heat. Cook and stir until tender, about 3 minutes. Add roasted asparagus and mushrooms.

Step 6

Coat a large, deep baking dish with cooking spray. Layer noodles, 1/4 of the sauce, 1/3 of the asparagus mixture, 1/2 cup mozzarella cheese, 1/2 cup Cheddar cheese, and 1/4 cup Parmesan cheese. Repeat layers twice more, followed by a top layer of noodles, 1/4 of the sauce, 1/2 cup mozzarella cheese, 1/2 cup Cheddar cheese, and 1/4 cup Parmesan cheese. Cover the baking pan with aluminum foil.

Step 7

Bake in the hot oven for 40 minutes. Uncover and bake until heated through, 10 to 15 minutes more.

Step 8

Set oven rack about 6 inches from the heat source and turn the oven's broiler to high. Broil the lasagna until brown and crisp on top, 2 to 3 minutes. Remove from the oven and let stand for 10 to 15 minutes before serving.