Add the cereal, banana chips, peanuts, cashews, pretzels, and pumpkin seeds to a 5-6 quart crock pot. Toss gently to combine.
Melt the butter and stir in the maple syrup, brown sugar, cinnamon, ginger, nutmeg, cloves, allspice, salt, and vanilla. Pour over the mix in the crock pot and stir gently to coat all the ingredients.
Cook on high power for 2-2 1/2 hours, stirring every 15-20 minutes. You don’t want the bottom pieces to burn and this will make your house smell amazing!
Once the mixture is cooked through and there is no remaining liquid, let cool on two baking trays to dry out overnight. Toss in the M & M’s.
Store in gallon sized bags.