In a spacious mixing bowl, combine the Chex cereal, pretzel sticks, dry roasted peanuts, M&M's, popped popcorn, and mini marshmallows. Use your hands or a spatula to gently toss the ingredients together until they are well mixed.
In a small microwave-safe bowl, add the white chocolate chips along with the vegetable oil. Microwave the mixture in 30-second intervals, stirring after each until the chocolate is completely melted and smooth, ensuring no lumps remain.
Once your white chocolate is melted, drizzle it over the prepared snack mixture in the large bowl. Using a spatula, carefully toss the mix to ensure every piece is lightly coated in the creamy white chocolate.
Evenly sprinkle the sea salt and ground cinnamon over the top of the coated snack mix. Gently toss again until all the flavors are thoroughly combined, ensuring every bite has a hint of sweetness and saltiness.
Spread the snack mix across a lined baking sheet (parchment paper works great) to create an even layer. Allow it to cool for about 30 minutes so the chocolate can set and harden.
After the chocolate has hardened, use clean hands to break apart any clumps into bite-sized pieces. Transfer the snack mix into an airtight container for storage, keeping it fresh and crunchy.
Notes
Present your delightful snack mix in individual cups or elegant cellophane bags tied with colorful ribbons, making it perfect for parties or casual gatherings!