Preheat oven to 325 degrees F. Line 15x10x3/4-inch (38 cm x 25cm x 2 cm) baking pan with parchment paper. (Or grease pan lightly.) Combine cereal, popcorn and nuts in large bowl; set aside.
Place honey, corn syrup and butter in medium saucepan. Bring to boil on medium heat, stirring constantly. Boil 1 min., without stirring. Remove from heat. Stir in vanilla. Drizzle over cereal mixture; toss to coat. Spread into prepared pan.
Bake 20 to 25 min. or until crisp and lightly toasted, stirring after 10 min. Cool completely. Stir to break apart.
All done! Now take a photo, rate it, and share your accomplishments!