This chocolate peanut butter Chex mix stays crisp for days thanks to a baked-on toffee coating. It’s a sturdy, sweet, and salty crowd-pleaser that won’t melt into a clump.
Preheat oven to 350°F and line a large baking sheet with parchment paper. Set aside.
Add the melted butter, brown sugar, and vanilla to a large bowl or zip-top bag. Whisk or shake to combine, then add the Chex cereal and pretzel twists, tossing to combine.
4 tablespoons salted butter, ¼ cup brown sugar, 1 teaspoon pure vanilla extract, 4 cups Peanut Butter Chex cereal, 2 cups pretzel twists
Transfer the mixture to the prepared baking sheet and spread it into a single layer.
Bake for 10 minutes, then stir the Chex and pretzel mixture and bake for another 10 minutes.
Allow the mix to cool to room temperature and then break it into bite size pieces. Add the Reese’s Pieces, chocolate chips, and Reese’s Cups and toss to combine.
1 cup Reese's Pieces, 1 cup chocolate chips, 1 cup mini Reese’s Cups
Notes
*In this recipe, I recommend using Peanut Butter Chex cereal, as it adds a ton of extra peanut butter flavor. If you can't find Peanut Butter Chex, you can use Rice Chex or Chocolate Chex instead, but the flavor will be different.**In place of Reese's Pieces, you can use peanut or peanut butter M&M's.Tips:
You can add other mix-ins, such as peanuts, Cheerios, or peanut butter baking chips!
Toss the Chex and pretzels well in the butter-sugar mix to completely coat them; this will allow them to crisp up better.
If you bake this on a particularly rainy/humid day, reduce the oven temperature to 250°F and bake for 45 minutes.
Don't skip stirring the Chex mix halfway through baking; this also helps it to crisp more evenly.
If your mix feels tacky or sticky after the 20-minute bake, turn the oven off, crack the door, and let it sit inside for another 5 minutes. This residual heat helps dehydrate the cereal for a better snap.
Allow the Chex mix to cool completely before stirring in the Reese's Pieces, chocolate chips, and Reese's Cups; otherwise, they may begin to melt.
If you want a more gourmet look, drizzle half of the chocolate chips (melted) over the spread-out mix on the baking sheet before tossing in the candies.
Let the Chex mix cool completely before storing; otherwise, it may become soggy.
Storage: Store chocolate peanut butter chex mix in an airtight container at room temperature for up to 5 days, in the refrigerator for up to 1 week, or in the freezer for up to 3 months.