Preheat the oven to 250°F.
Toss together the corn chex, rice chex, pretzels, and nuts in a large bowl.
In another bowl whisk together the butter, maple syrup, Worcestershire sauce, salt, garlic powder and onion powder. Pour over the snack mix and toss to combine.
Spread out on a sheet pan and bake for 60-75 minutes, stirring every 15 minutes, until mix is toasted and dry.
Let cool completely, then transfer to an airtight container. Store for up to 1-2 weeks.
NOTES
- Recipe makes 8 cups snack mix.
Calories: 247kcal, Carbohydrates: 24g, Protein: 6g, Fat: 15g, Saturated Fat: 3g, Cholesterol: 6mg, Sodium: 481mg, Potassium: 208mg, Fiber: 2g, Sugar: 5g, Vitamin A: 303IU, Vitamin C: 3mg, Calcium: 58mg, Iron: 4mg