Preparation
Cook noodles according to package directions; drain and set aside.
Melt
butter in a large skillet over medium-high heat; add celery and next 3
ingredients. Sauté 4 to 5 minutes or until vegetables are tender.
Combine sour cream and next 4 ingredients in a bowl; stir in vegetable mixture and spinach. Add crabmeat; toss.
Arrange
3 lasagna noodles in bottom of a lightly greased 13- x 9- inch baking
dish; top with half of crabmeat mixture. Top with half of cheese.
Repeat layers with 3 lasagna noodles and remaining crabmeat mixture.
Top with remaining 3 lasagna noodles.
Cover and bake at 350° for
50 minutes or until thoroughly heated. Uncover and top evenly with
remaining 2 cups cheese. Bake, uncovered, 15 minutes or until cheese is
melted. Let stand 10 minutes before serving. Garnish, if desired.