Preheat oven to 350°.
Lightly spoon the flour into a dry measuring cup, and level with a knife. Combine flour, crumbs, and the next 12 ingredients (crumbs through egg white); beat mixture at medium speed of a mixer for 2 minutes. Stir in nuts. Spoon the batter into a 12-cup Bundt pan coated with cooking spray. Bake at 350° for 50 minutes or until a wooden pick inserted in the center comes out clean. Cool on a wire rack 5 minutes. Remove cake from pan; cool completely on wire rack. Serve cake with whipped topping. Sprinkle with powdered sugar, if desired.