Making Margarita Chex Mix is a breeze when you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Baking Sheet: Line a large baking sheet with parchment paper or lightly grease it to prevent sticking.
3. Mix Dry Ingredients: In a large mixing bowl, combine the Rice Chex, Corn Chex, pretzel sticks, and mixed nuts.
4. Prepare the Sauce: In a separate bowl, whisk together the melted butter, lime juice, lime zest, chili powder, garlic powder, onion powder, sea salt, and cayenne pepper if using.
5. Combine Mixtures: Pour the butter mixture over the dry ingredients, stirring gently until everything is evenly coated.
6. Spread on Baking Sheet: Evenly spread the mixture onto the prepared baking sheet.
7. Bake: Place the baking sheet in the preheated oven and bake for 15-20 minutes. Stir halfway through to ensure even cooking.
8. Cool: Once baked, remove from the oven and let the mix cool for about 5 minutes. Sprinkle with coarse sea salt while still warm for added flavor.
9. Store: Transfer the cooled mix to an airtight container. It can be stored at room temperature for up to a week.

These steps will guide you in creating this incredible Margarita Chex Mix effortlessly!