In a separate bowl, stir together melted butter, brown sugar, pumpkin pie spice, and vanilla and then pour over the dry mix.TIP: Stir in the brown sugar mix slowly in small batches. So add a little, stir a little. Add a little more, stir. Continue until it is all incorporated and mixed evenly in.
¼ cup butter, ¼ cup brown sugar, 1 tablespoon Pumpkin Pie Spice, ½ teaspoon vanilla extract
Line a baking sheet with parchment paper or a silicone baking mat, spread out the mixture into an even layer and bake at 275 for 45 minutes, stirring every 15 minutes.
Let cool on the baking sheet and when totally cool, mix in the candy pieces.
1 8-oz bag M&M’s, 1 cup harvest candy mix, ½ cup Reese's pieces
Notes
Tips:
Add the butter and brown sugar mixture a little at a time and stir between each addition so the cereal, pretzels and Bugles all get coated evenly.
Spread the mix in an even layer and stir it every 15 minutes while it bakes so it toasts evenly.
Let the baked mixture cool completely before you add any candy. If it is still warm the chocolate melts and the candy pieces lose their shape.
Storage:
Store any leftovers in an airtight container at room temperature for up to 2 weeks. You can freeze the cooled chex mix for up to 2 months.