Sweet and Salty Caramel Snack Mix

6 cups graham cracker cereal (like Honey Grahams)
1 cup honey roasted peanuts
1 cup salted cashews or macadamia nuts--any salted nuts are good
1/2 cup butter
1 cup firmly packed brown sugar
1/4 cup light Karo syrup
1 tsp. vanilla
3 cups Pretzel M&Ms or any M&M's you like (about 1 large bag)

Line a baking sheet with aluminum foil or wax paper and lightly spray with nonstick cooking spray. Set aside.

Toss together the cereal and the nuts in a large bowl and set aside.

In a medium saucepan, combine the butter, brown sugar, and Karo syrup and cook over medium heat, stirring frequently, until it begins to boil. Allow to boil for 2 minutes (3 if you’re at a high elevation) and then remove from heat. Add the vanilla and stir until combined. Drizzle the caramel mixture over the cereal/nut mixture and stir quickly to combine. Transfer to the prepared baking sheet. When the caramel mixture has cooled but isn’t solid yet (just a few minutes), add the Pretzel M&Ms and toss gently to combine. Allow to cool completely before serving.