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Addicting Toffee Chex Mix

Addicting Toffee Chex Mix (Crispy Caramel Brittle)

This irresistible Toffee Chex Mix is ultra-crisp, buttery, and perfectly caramelized with a light, airy brittle texture. It's a crowd-pleasing snack that stores beautifully, gifts well, and disappears fast!
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Prep Time 15 minutes
Cook Time 1 hour
Total Time 1 hour 15 minutes
Servings: 12 servings
Course: Dessert, Snack
Cuisine: American
Ingredients Method Notes

Ingredients
  

Cereal & Nuts
  • 8-9 cups Chex cereal Rice Chex or mix of Rice & Corn
  • 1 1/2 cups nuts pecan halves or walnuts
Toffee Coating
  • 1 cup unsalted butter
  • 1 1/2 cups packed brown sugar light or dark
  • 1/2 cup light corn syrup
  • 1 tsp alcohol-free vanilla extract or vanilla powder as a substitution
  • 1 tsp baking soda crucial for toffee texture
  • 1/2 tsp fine salt

Method
 

  1. Preheat oven to 250°F (120°C). Line a large rimmed baking sheet (or two) with parchment. Combine Chex cereal and nuts in a very large heatproof bowl. Warm the bowl slightly to prevent the toffee from seizing.
  2. In a medium saucepan, melt butter with brown sugar and corn syrup over medium-high heat, stirring until smooth. Bring to a rolling boil and boil for 5 minutes without stirring.
  3. Remove from heat and whisk in the alcohol-free vanilla extract, salt, and baking soda. The mixture will foam and expand as it aerates.
  4. Immediately pour the foaming toffee over the cereal and nuts. Fold quickly with a silicone spatula until everything is evenly coated.
  5. Spread the mixture evenly onto the prepared baking sheet(s). Bake for 45–60 minutes, stirring every 15 minutes, until dry and crisp.
  6. Let cool completely for 30–45 minutes. Break into bite-sized pieces and store airtight for up to 1 week.

Notes

For extra crunch, add a pinch of flaky salt after baking. This recipe makes wonderful edible gifts packaged in bags or tins.