Preheat oven to 350 degrees Fahrenheit.

In large bowl, combine popcorn, cereal and nuts.

In a small bowl, whisk together honey and hot, melted butter and vanilla until blended.

Pour over popcorn mixture and stir until well combined.

Line two 15-in. x 10-in. x 1-in.baking sheets with parchment paper if desired. (Or simply leave them ungreased.)

Pour popcorn mixture over sheets into a single layer.

Bake for 20 minutes or until golden brown, stirring at least twice during the baking process.

Cool before serving.

Store in airtight container.