In a medium saucepan, combine the butter, maple syrup, soy sauce and curry paste and bring to a simmer, whisking to dissolve the curry paste. Pour the mixture over the snack mix and toss to coat completely. Season generously with salt and pepper and spread on 3 large rimmed baking sheets. Bake for 35 minutes, stirring 2 or 3 times and shifting the sheets, until nearly dry and toasted. Let cool completely, stirring occasionally. Serve in bowls.