01 - Preheat the oven to 350°F. Line a baking sheet with parchment paper.
02 - Spread sesame seeds on the baking sheet and toast in the oven for 3–4 minutes until golden and fragrant. Remove and set aside.
03 - In a medium saucepan, combine honey, butter, water, and 1/2 teaspoon sea salt. Heat over medium-low heat until butter melts and mixture is smooth.
04 - Add cashews to the saucepan, stirring to coat evenly with the honey mixture.
05 - Spread coated cashews on the lined baking sheet in a single layer.
06 - Bake for 10–12 minutes, stirring halfway through, until cashews are golden and glaze bubbles. Watch carefully to prevent burning.
07 - Remove from oven and immediately sprinkle toasted sesame seeds over cashews. Stir gently to coat.
08 - Let cool completely on baking sheet; cashews will crisp as they cool. Sprinkle with extra flaky sea salt before serving if desired.