Step 1: Preheat and Prepare

Preheat your oven to 250°F (120°C). Line a large baking sheet with parchment paper or a silicone baking mat. This ensures the snack mix doesn’t stick to the pan and makes cleanup a breeze.

Step 2: Combine the Base Ingredients

In a large mixing bowl, combine the pretzels, cereal squares, popcorn, and nuts (if using). Toss gently to mix everything together. Set aside while you prepare the churro toffee coating.

Step 3: Make the Churro Toffee Coating

In a medium saucepan, melt the butter over medium heat. Once melted, add the brown sugar, granulated sugar, corn syrup, and salt. Stir continuously until the mixture begins to bubble and thicken, about 3-4 minutes. Remove the pan from the heat and stir in the vanilla extract and ground cinnamon. Be cautious as the mixture will bubble up slightly when you add the vanilla.

Step 4: Coat the Snack Mix

Pour the hot churro toffee mixture over the prepared snack mix. Use a spatula to gently toss and coat all the ingredients evenly. Work quickly, as the coating will start to set as it cools.

Step 5: Spread and Bake

Spread the coated snack mix evenly onto the prepared baking sheet. Bake for 20 minutes, stirring halfway through to ensure even coating and prevent clumping.

Step 6: Add the Cinnamon Sugar Topping

While the snack mix is baking, combine the granulated sugar and ground cinnamon in a small bowl. Once the mix comes out of the oven, sprinkle the cinnamon sugar mixture evenly over the warm snack mix. Toss gently to coat.

Step 7: Cool and Add Extras

Let the snack mix cool completely on the baking sheet. Once cooled, add the toffee bits and white chocolate chips (if using). Toss gently to combine.

Step 8: Store or Serve

Transfer the snack mix to an airtight container for storage or serve immediately. Enjoy this sweet and salty treat anytime!