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

Mix together well-mashed ripe bananas, melted butter, and brown sugar for 3 minutes. Add in the egg and vanilla, mixing well for another 2 minutes.

In a separate bowl, whisk together flour, baking soda, salt, and optional spices for 2 minutes.

Gently fold the dry ingredients into the wet mixture until just combined, forming a loose, sticky dough.

Cover and refrigerate the dough for 20-30 minutes to enhance chewiness.

Scoop about 2 tablespoons of dough onto the prepared sheets, leaving space for spreading.

Bake for 11-13 minutes until edges are golden and centers are slightly soft.

Cool on the baking sheet for 10 minutes before transferring to a wire rack.