Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.

In a medium mixing bowl, whisk together all-purpose flour, baking powder, ground cinnamon, and salt.

In a large mixing bowl, beat together softened unsalted butter, honey, and packed brown sugar until light and fluffy.

Add the egg and vanilla extract to the creamed mixture, blending until just combined.

Gently fold the dry ingredient mixture into the wet mixture until a soft, slightly sticky dough forms.

Drop rounded balls of dough onto the baking sheets, leaving space between each, and flatten them slightly before sprinkling with flaky sea salt.

Bake for 12-15 minutes, watching for golden edges and slightly soft centers.

Cool the cookies on the baking sheets for 5 minutes before transferring them to a wire rack.