Preheat the oven to 180°C/350°F (160°F fan-forced).
Spread the nuts and pretzels on a tray and toast for 10 minutes, tossing at the 5 minute mark.
Mix the butter ingredients together in a large bowl using a rubber spatula.
Pour the hot nuts in, then toss well until you see no dry patches on any nut. Serve warm!
