Preheat the oven to 180 degrees Celsius and line a baking tray with baking paper.
Spread almonds over tray and roast for 10 minutes.
Meanwhile, mix melted butter with rosemary, salt, honey and cayenne pepper in a medium bowl.
Tip roasted almonds into butter mixture and stir well until fully combined.
Serve immediately or allow to cool and store in an air-tight container.