Line a large baking sheet (or two smaller ones) with parchment paper or a silicone baking mat. Set aside.
In a large mixing bowl, add the mini pretzels, graham cracker pieces, mini marshmallows, semi-sweet chocolate chips, white chocolate chips, and any nuts or cereal you’re using. Gently toss with clean hands or a large spoon until evenly distributed.
4 cups mini pretzel twists, 3 cups graham cracker squares, 2 cups mini marshmallows, 1 1/2 cups semi-sweet chocolate chips, 1/2 cup white chocolate chips, 1/2 cup roasted peanuts or mixed nuts, 1/2 cup cereal
In a microwave-safe bowl, combine the chocolate melting wafers and butter. Microwave in 20–30 second bursts, stirring between each, until smooth and glossy (about 60–90 seconds total). Stir in the vanilla extract and 1/4 teaspoon fine sea salt until well combined.
2 tablespoons butter, 1 cup chocolate melting wafers or almond bark, 1 teaspoon vanilla extract, 1/4 teaspoon fine sea salt
Pour about half of the melted chocolate mixture over the bowl of snack mix. Use a large spatula to gently toss until most pieces have some chocolate. Add the remaining melted chocolate and toss again, aiming for light coverage and small clusters rather than fully coating everything.
Transfer the coated snack mix to the prepared baking sheet and spread into an even layer. It’s fine if some clumps remain. Sprinkle a bit more sea salt over the top if you like a strong sweet-and-salty contrast.
Let the mix sit at room temperature for 30–45 minutes, or until the chocolate is set and no longer sticky. If your kitchen is warm, refrigerate the tray for 15–20 minutes to speed up setting.
Once the chocolate has hardened, break the snack mix into large chunks. If using M&M’s or other colorful candies, sprinkle them over the mix and toss gently so the colors stay bright and un-melted.
1/2 cup M&M’s or chocolate candies
Transfer the S'mores Snack Mix with Pretzels to a serving bowl, jars, or treat bags. Serve immediately, or store in an airtight container at room temperature for 3–4 days.