Use a rolling pin or hands to flatten the croissant to 1/4-inch thick.

Heat butter a medium skillet over medium heat until melted. Place croissant in skillet, bottom side down, and press firmly with bottom of a smaller skillet or saucepan until lightly browned, about 3 minutes.

Drizzle honey evenly over croissant and add remaining butter to skillet. Flip croissant over and press again, cooking until the top side is lightly browned and toasted, about 2 minutes. Remove to a plate to cool.