# Components:
→ Vegetables
01 - 3 medium sweet potatoes, peeled and thinly sliced (⅛ inch)
02 - 4 cups fresh baby spinach
03 - 1 small onion, finely chopped
04 - 3 cloves garlic, minced
→ Sauce
05 - 3 tablespoons unsalted butter
06 - 3 tablespoons all-purpose flour
07 - 2 cups whole milk
08 - 1 cup heavy cream
09 - 1 cup grated Parmesan cheese
10 - ½ teaspoon ground nutmeg
11 - Salt and freshly ground black pepper, to taste
→ Cheese
12 - 2 cups shredded mozzarella cheese
13 - 1 cup ricotta cheese
→ Other
14 - 2 tablespoons olive oil
15 - ¼ cup chopped fresh basil (optional, for garnish)
# Directions:
01 - Preheat oven to 375°F (190°C). Grease a 9x13-inch baking dish using olive oil or nonstick spray.
02 - Heat olive oil in a large skillet over medium heat. Sauté onion until translucent, about 3 minutes. Add garlic; cook for 1 minute. Add spinach and cook until wilted, approximately 2 minutes. Remove from heat.
03 - In a medium saucepan, melt butter over medium heat. Whisk in flour and cook for 1 minute. Gradually pour in whole milk and heavy cream, whisking until smooth and thickened, about 4 to 5 minutes. Stir in Parmesan cheese, ground nutmeg, salt, and freshly ground black pepper. Remove from heat.
04 - Spread a thin layer of Alfredo sauce on the bottom of the prepared baking dish.
05 - Arrange a layer of sweet potato slices over the sauce, slightly overlapping.
06 - Top with half of the spinach mixture, then dollop half of the ricotta cheese over the spinach. Spoon a portion of Alfredo sauce over the layer and sprinkle with mozzarella cheese.
07 - Repeat with another layer of sweet potato, remaining spinach, ricotta cheese, Alfredo sauce, and mozzarella cheese. Finish with a final layer of sweet potatoes, remaining Alfredo sauce, and remaining mozzarella cheese.
08 - Cover dish tightly with foil and bake for 30 minutes. Remove foil and continue baking for an additional 15 to 20 minutes, until sweet potatoes are fork-tender and cheese is melted and golden.
09 - Let lasagna stand for 10 minutes before slicing. Garnish with chopped fresh basil, if desired.
