Addicting Toffee Chex Mix

Section: Quick & Tasty Snack Ideas

This addicting snack combines crisp Chex cereal and nuts, all coated in bubbly, buttery toffee. The hot syrup is poured over the cereal mix, then baked low-and-slow for that signature crunch. Gentle stirring during baking ensures every bite is evenly crisped and laced with caramel flavor. A touch of vanilla and salt round out the taste, while baking soda adds airiness to the brittle texture. Once cooled, it breaks into toffee-glazed shards that are perfect for gifting, snacking, or parties. Stored airtight, it keeps its crunch and flavor for days—making it an ideal treat to make ahead.

woman cooking.
Created By Lena
Updated on Wed, 17 Dec 2025 15:41:55 GMT
A bowl of cereal with a green leaf on top. Save
A bowl of cereal with a green leaf on top. | recipesbylena.com

This Addicting Toffee Chex Mix is the game-changing crowd-pleaser you need for holiday parties snacking or gifting. Crunchy cereal and rich toffee-caramel combine in a way that somehow gets more irresistible with every bite. It is one of those recipes friends and family beg me to make every year and it never lasts more than a couple of days in my house.

I first made this on a cold December afternoon and the caramel aroma alone was enough to draw everyone into the kitchen. My cousin still texts me for the recipe every December.

Ingredients

  • Chex cereal: choose rice chex or a mix of rice and corn for maximum crunch and flavor balance select fresh crisp cereal for best results
  • Pecan halves or walnuts: add a buttery crunch nuts should be fresh and unsalted for the richest flavor
  • Unsalted butter: the foundation of the toffee select high quality real butter for depth and smooth texture
  • Packed brown sugar: provides the deep molasses undertone light or dark both work
  • Light corn syrup: helps prevent the toffee from crystallizing and keeps the coating smooth
  • Vanilla extract: brings out caramel notes use pure extract for fuller flavor
  • Baking soda: reacts to create airy bubbles in the toffee making it lighter and crisp not hard
  • Fine salt: balances the sweetness and intensifies flavors opt for fine salt so it dissolves evenly

Instructions

Preheat and Set Up:
Preheat your oven to 250 degrees Fahrenheit and line a large rimmed baking sheet with parchment. In a very large heatproof bowl combine the cereal and nuts. A slightly warm bowl slows the toffee from seizing so you can run it under hot water and dry it well before using.
Boil the Toffee:
Melt the butter brown sugar and corn syrup together in a medium saucepan over medium-high heat. Stir occasionally until smooth. Once it reaches a rolling boil allow it to bubble vigorously for five minutes without stirring to fully caramelize. Use a pan with high sides since the toffee will expand with the next step.
Create the Toffee Reaction:
Take the saucepan off the heat and immediately whisk in the vanilla salt and baking soda. The mixture will foam lighten and expand creating tiny air bubbles essential for crisp texture. The baking soda is what unlocks the best crunchy brittle result.
Coat the Mix Quickly:
Pour the hot foaming toffee directly over the bowl of cereal and nuts. Use a heatproof spatula to fold and toss rapidly ensuring every piece glistens. Keep scraping the bottom and turning the bowl so no dry patches remain. Move fast before the toffee sets.
Bake for Maximum Crunch:
Spread the coated cereal evenly on your prepared sheet. Bake for forty-five to sixty minutes stirring every fifteen minutes to redistribute the syrup and finish crisping all the pieces. Properly baked mix feels light and nonsticky once cool.
Cool Break and Store:
Let the mix cool totally for at least half an hour right on the pan. The toffee hardens as it cools so be patient. Once cool break into shards and transfer to an airtight container for up to a week. For gifting sprinkle with flaky salt and pack in pretty bags or jars.
A bowl of crispy, cheesy, and crunchy snacks.
A bowl of crispy, cheesy, and crunchy snacks. | recipesbylena.com

My favorite part is always the caramelized nut clusters or the big glossy shards that pop out of the pan ready to be bagged up for friends. Every year my niece and I turn this recipe into a kitchen tradition sharing stories as we break up the cooled toffee mix.

Storage Tips

Keep the finished mix in an airtight container at room temperature for best crunch. If your house is humid line the container with a paper towel to keep moisture at bay. For longer storage freeze in a zip-top bag then bring to room temperature before serving.

Ingredient Substitutions

You can use any Chex variety just keep the total around nine cups. Swap in cashews almonds or mixed nuts depending on your preference. If you want it nut-free double the cereal and use some pretzel sticks for crunch.

Serving Suggestions

This mix is flavorful enough to stand alone in snack bowls or as part of a dessert buffet. Pack into cellophane bags or mason jars tied with a ribbon for instant gifts. For a sweet and salty twist toss in pretzels or a few pinches of flaky finishing salt.

Cultural Note

Chex Mix is a staple in American home kitchens especially around holidays and gatherings. This toffee twist channels generations of cereal snack recipes with a caramelized upgrade. It is nostalgic snack food that feels special enough for gifts yet familiar and comforting for family snacking.

Seasonal Adaptations

Crush peppermint candy over the top before baking for a holiday vibe. Sprinkle cinnamon and pumpkin pie spice for a fall batch. Add roasted sunflower seeds for a spring picnic crunch.

Success Stories

Friends have written thank-you notes after holiday parties with this mix. My neighbor once hid her gift jar from her kids so she would not have to share. It is that addictive.

Freezer Meal Conversion

This mix freezes beautifully. Spread cooled shards in a single layer in a freezer bag then press out all air and seal. They thaw quickly at room temperature for last-minute snacks or gifting emergencies.

A table with a bowl of cereal, a bowl of butter, a bowl of nuts, and a jar of honey.
A table with a bowl of cereal, a bowl of butter, a bowl of nuts, and a jar of honey. | recipesbylena.com

This Toffee Chex Mix is endlessly customizable and crowd-adored. One batch will not be enough!

Recipe FAQs

→ What types of Chex cereal work best?

Rice Chex or a mix of Rice and Corn Chex give a light, crisp texture and soak up toffee coating well.

→ Can I add other mix-ins?

Yes, add pretzels or coconut flakes after baking, or sprinkle on flaky sea salt for extra flavor.

→ How do I stop the toffee from seizing?

Warm your mixing bowl before adding the syrup; work quickly to coat cereal before the toffee cools.

→ What should I do if the pieces stay sticky?

Bake the mix an extra 10–15 minutes, stirring once, to help it crisp up as it cools.

→ How long does this snack stay fresh?

Stored in an airtight container at room temperature, it will stay crisp and delicious for up to one week.

Addicting Toffee Chex Mix

Toffee-coated Chex and nuts create an ultra-crispy, buttery treat with a perfect sweet and salty finish.

Preparation Time
10 minutes
Time to Cook
60 minutes
Overall Time
70 minutes
Created By: Lena

Recipe Category: Snacks

Difficulty Level: Medium Difficulty

Cuisine Style: American

Serving Size: 12 Portions (One large batch, approximately 12 servings)

Dietary Categories: Suitable for Vegetarians

Ingredients List

→ Cereal & Nuts

01 850 g Chex cereal (Rice Chex or a blend of Rice and Corn Chex, approximately 8–9 cups)
02 180 g pecan halves or walnuts (1.5 cups)

→ Toffee Coating

03 226 g unsalted butter, cut into pieces
04 330 g packed brown sugar, light or dark (1.5 cups)
05 120 ml light corn syrup (0.5 cup)
06 5 ml vanilla extract (1 teaspoon)
07 5 ml baking soda (1 teaspoon)
08 2.5 ml fine salt (0.5 teaspoon)

How to Make It

Step 01

Preheat oven to 120°C (250°F). Line a large rimmed baking sheet, or two if needed, with parchment paper. Combine Chex cereal and nuts in a very large heatproof bowl and position near the stove. Optionally, warm the bowl with hot water and dry thoroughly to slow down crystallization during coating.

Step 02

In a medium saucepan with high sides, melt butter with brown sugar and corn syrup over medium-high heat, stirring until the mixture is smooth. Increase to a rolling boil and cook for five minutes without stirring. Set a timer for precision.

Step 03

Remove saucepan from the heat. Immediately whisk in vanilla extract, salt, and baking soda. The mixture will foam, lighten, and increase in volume due to the baking soda reaction. Use caution as the toffee is extremely hot.

Step 04

Pour the foaming toffee over the cereal and nuts. Using a silicone spatula, quickly fold and toss the mixture to coat every piece thoroughly, scraping from the bottom and rotating the bowl to prevent any dry spots.

Step 05

Spread the coated mixture evenly across the prepared baking sheet(s). Bake for 45 to 60 minutes, stirring every 15 minutes to redistribute the coating and further dry the mix. The mixture is finished when it feels dry and light, not sticky.

Step 06

Allow the baked mix to cool completely on the baking sheet for 30 to 45 minutes, where it will harden as it cools. Break into bite-sized shards for serving or storage.

Step 07

Store completely cooled mix in airtight containers at room temperature for up to one week. For gifting, pack shards into cellophane bags and optionally top with a sprinkle of flaky sea salt.

Extra Tips

  1. If the mixture remains tacky after cooling, return to oven and bake an additional 10–15 minutes, stirring once.
  2. Add pretzels or coconut flakes after baking for variation, or finish with flaky salt for added texture.
  3. Preparation can be made ahead and will remain crisp for up to 1 week if stored airtight.

Essential Tools

  • Large heatproof mixing bowl
  • Medium saucepan with high sides
  • Rimmed baking sheet
  • Parchment paper
  • Silicone spatula

Allergen Warnings

Double-check all ingredients for allergens and consult your doctor if you’re unsure.
  • Contains tree nuts such as pecans or walnuts.
  • May contain gluten if using non-gluten-free Chex cereal.
  • Contains dairy from butter.

Nutritional Information (Per Serving)

This info is offered for general knowledge and isn’t meant as medical advice.
  • Calories Info: 390
  • Total Fat: ~
  • Total Carbs: ~
  • Proteins Content: ~