1. Heat oven to 250 degrees F.
2. In a large bowl, combine cereal squares, pretzels, rice crackers, whole-wheat crackers and peanuts.
3. In a smaller bowl, combine butter, Worcestershire sauce, sugar, garam masala and salt; pour over cereal mixture and toss gently to coat.
4. Coat a roasting pan with cooking spray. Spread snack mixture in a single layer and bake 30 minutes, stirring twice. Cool on a wire rack and stir in raisins.