Preheat oven to 350F. Prepare baking sheet with parchment paper for easy cleanup.
In a small bowl, combine ingredients for the syrup: honey, butter, peanut butter and vanilla extract. Set aside.
In a large bowl, combine ingredients for the granola: old fashioned oats, steel cut oats, peanuts, cinnamon, and salt. Stir to mix.
Pour syrup over the granola mixture. Stir to coat.
Spread granola evenly onto your baking sheet.
Bake granola at 350F for 10-15 minutes. It will have spread out in the oven, and maybe bubbled just a little. This is okay. Stir the granola gently with a spatula, and rearrange it evenly on the pan again. Return the granola to the oven and bake another 10-15 minutes (checking frequently to be sure it doesn't burn). Granola is ready when it is fragrant and golden.
Cool granola completely, and break any large chunks into bite-sized pieces. Stir in the mix-ins: mini M&Ms and mini chocolate chips.
Divide granola into 1/4 cup portions for on-the-go snacking! Snack-sized plastic baggies work great!
Monster Cookie Granola https://www.rootandbloomforever.com/monster-cookie-granola-my-kids-favorite-on-the-go-snack/