Ingredients
2 tablespoons (1/4 stick) butter, divided
2 medium leeks (white and pale green parts only), halved lengthwise, thinly sliced (about 2 cups)
1 pound thick asparagus spears, trimmed, cut on diagonal into 1-inch pieces
4 ounces fresh morel mushrooms, rinsed, coarsely chopped, or 5 ounces fresh shiitake mushrooms, stemmed, coarsely chopped
2 teaspoons chopped fresh thyme
3 1/2 cups low-salt chicken broth
1 1/2 cups heavy whipping cream
1 bay leaf
2 tablespoons all purpose flour
3/4 teaspoon freshly grated nutmeg
Nonstick vegetable oil spray
1 9-ounce package no-cook lasagna noodles (12 noodles)
1 1/4 cups (about) finely grated Parmesan cheese, divided
Ingredient Tip
If fresh morel mushrooms are unavailable, pour 2 cups boiling water over 1 ounce of dried morel mushrooms and let stand until the mushrooms are soft, about 30 minutes. Drain the mushrooms and squeeze dry before chopping.