Butternut Squash Lasagna Recipe - How to Make Butternut Squash Lasagna

Ingredients

• Kosher salt
• 8 oz. lasagna noodles
• Extra-virgin olive oil, for drizzling
• 4 tbsp. butter
• 2 cloves garlic, finely chopped
• 3 tbsp. all-purpose flour 
• 3 c. whole milk
• 3/4 tsp. freshly chopped thyme
• Large pinch freshly grated nutmeg
• 1/2 c. finely grated Parmesan
• Freshly ground black pepper
• 2 (10-oz.) bag frozen spinach, thawed and squeezed dry
• 1 small butternut squash (about 1 pound), peeled, seeded, and cut into 1/4-inch-thick slices
• 8 oz. shredded mozzarella