In a mixing bowl, combine softened unsalted butter, honey, and brown sugar. Beat until light and fluffy, about 3-5 minutes.

Add in the egg and vanilla extract. Continue mixing until the mixture is smooth and well-combined.

In a separate bowl, whisk together the all-purpose flour, baking soda, salt, and optional cinnamon.

Gradually add the dry ingredients into the wet mixture. Stir until a soft dough forms.

Cover the dough with plastic wrap and chill in the fridge for about 30 minutes.

Preheat your oven to 350°F (180°C). Line a baking sheet with parchment paper.

Once chilled, scoop tablespoon-sized portions of dough onto the prepared baking sheet, leaving about 2 inches of space between each.

Bake for 10-12 minutes, or until the edges are golden brown and the centers look set.

Sprinkle flaky sea salt on top as soon as they come out of the oven.

Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack.