Preheat oven to 350°F (175°C) and line a baking sheet with a silicone mat or parchment paper.

In a large bowl, combine popcorn, cereal, pretzels, nuts, and potato chips.

In a saucepan, melt butter over medium heat.

Add brown sugar and corn syrup, stirring until it reaches a boil.

Reduce heat and simmer for 2 minutes without stirring.

Remove from heat and carefully stir in salt and vanilla.

Add baking soda and stir until the caramel becomes light and foamy.

Pour caramel over the popcorn mix and stir well to coat.

Spread evenly on the baking sheet.

Bake for 4 minutes, stirring halfway through.

Let cool completely, then break into pieces and serve.

This sweet and salty caramel popcorn mix becomes perfectly crunchy once cooled.