How to Make It
Preheat oven to 350°F. Coat a 9- x 5-inch loaf pan with baking spray.
Place eggs in a large bowl; lightly whisk. Add granulated sugar, vegetable oil, toasted sesame oil, and vanilla; whisk until smooth. Stir in grated zucchini.
Whisk together flour, baking soda, Chinese five spice, baking powder, and salt in a medium bowl. Add flour mixture to egg mixture, stirring just until combined. Set aside 3 tablespoons of the cashews; stir remaining cashews into batter. Scrape batter into prepared pan; smooth top with spatula. Bake in preheated oven until a wooden pick inserted in center comes out clean, 55 minutes to 1 hour.
Cool bread in pan on a wire rack 15 minutes. Run a knife around the edges of pan to loosen bread. Remove bread from pan, and cool completely on rack, about 1 hour.
Whisk together powdered sugar, cream, and cashew butter in a medium bowl until smooth. Stir in reserved cashews. Spread icing over top of cooled bread.