01 - Line a baking sheet with parchment paper or a silicone baking mat.
02 - In a large mixing bowl, combine pecans, walnuts, almonds, pumpkin seeds, and dried fruit if using.
03 - In a small saucepan over medium heat, melt the butter with maple syrup and sea salt. Bring to a gentle boil and simmer, stirring frequently, for 2 to 3 minutes until slightly thickened. Remove from heat and stir in vanilla extract.
04 - Pour the hot maple glaze over the nut and seed mixture and toss thoroughly to coat evenly.
05 - Using two spoons, drop heaping tablespoons of the mixture onto the prepared baking sheet, shaping into clusters.
06 - Allow clusters to cool completely at room temperature for about 30 minutes to set. For faster setting, place in the refrigerator for 10 to 15 minutes.
07 - Once set, transfer clusters to an airtight container and store at room temperature for up to one week.