Brownie Brittle

Name: Brownie Brittle
Prep time: 10 min
Total time: 10 min
Cuisine: American
Ingredients: 1 1/4 c. (247 g.) granulated sugar; 1/3 c. (57 g.) chopped semisweet (60%) baking chocolate; 1/4 c. water; 1/2 c. neutral oil; 1/3 c. (28 g.) unsweetened cocoa powder; 1 tsp. vanilla extract; 1/2 tsp. kosher salt; 2 large egg whites; 3/4 c. (90 g.) all-purpose flour; 1/4 tsp. baking powder; 1/4 c. semisweet chocolate chips; 4 candy canes, crushed (about 1/3 c.), divided; 1/3 c. (57 g.) chopped white chocolate