01 - Preheat the oven to 350°F. Line a baking sheet with parchment paper.
02 - In a small saucepan, melt the butter over low heat. Stir in the honey and sea salt until well combined. Remove from heat and stir in vanilla extract if using.
03 - Place the raw cashews in a mixing bowl. Pour the honey-butter glaze over the cashews and toss thoroughly until every nut is evenly coated.
04 - Spread the coated cashews in a single layer on the prepared baking sheet. Roast for 10 minutes.
05 - Remove the baking sheet from the oven. Sprinkle the sesame seeds over the cashews and stir gently to coat evenly. Add granulated sugar if desired for extra crunch.
06 - Return the cashews to the oven and roast for an additional 3 to 5 minutes, or until golden and fragrant. Watch closely to prevent burning.
07 - Remove from the oven and let cool completely on the baking sheet. The cashews will crisp up as they cool. Break apart any clusters as needed.
08 - Transfer to an airtight container and store at room temperature for up to 1 week.