Brown chicken in a large, deep skillet or Dutch oven set over medium heat. Add mushrooms, onion and garlic; cook for 8 minutes or until mushrooms are browned. Stir flour, thyme, salt and pepper into skillet. Stir in chicken broth, whipping cream and white wine. Bring to a simmer; cook, stirring often, for 10 minutes until sauce is thickened. Stir in spinach.

Preheat oven to 350°F (180°C). Spread 1/2 cup (125 mL) sauce in 13 x 9-inch (3 L) baking dish. Top with 3 uncooked noodles, 1 cup (250 mL) sauce and 1 cup (250 mL) shredded cheese. Repeat layers twice. Top with a final layer of noodles and remaining sauce.

Bake, covered, for 45 minutes. Meanwhile, toss crumbs with butter; sprinkle evenly over the lasagne. Bake, uncovered, for 10 minutes or until crumbs are golden. Let stand 10 minutes before slicing.