• Preheat oven to 250℉. Gather the ingredients so you have everything close at hand on your counter or table.

Prepare the Snack Mix

• Using a glass measuring cup, heat 1/2 cup butter in the microwave for 20 second increments until melted. Add the 1/2 cup vegetable oil and 3 tablespoons Worcestershire sauce to the butter and whisk to combine.
• Mix the 3 tablespoons Ranch Dressing Mix and 1 teaspoon garlic powder with the melted butter. Whisk to combine.
• In a large roasting pan, add 5 cups Corn Chex Cereal, 5 cups Rice Chex Cereal and 5 cups Wheat Chex Cereal, 2 1/2 cups pretzels, 2 1/2 cups bite-size cheese crackers, and 2 1/2 cups wheat crackers.
• Begin pouring the liquid mixture over the cereal and crackers, carefully stirring with a rubber spatula or long handled wooden spoon as you go. Do this in thirds, mixing well between each pour.
• Next, sprinkle (half) of the 4 tablespoons grated Parmesan cheese and (half) of the 4 tablespoons Better Cheddar Powder over the snack mix, again stirring with a spatula to combine. Repeat with the remaining cheese.
• Bake uncovered in preheated oven for 90 minutes, stirring every 30 minutes. Add the 2 1/2 cups mixed nuts to the snack mix for the last 30 minutes of baking, carefully folding to combine.
• Remove from oven, and allow the snack mix to cool before serving. Store snack mix in a covered container in a cool, dry place for 4-6 weeks. Makes 25 cups.