Preheat oven to 350°F (175°C). Grease and line an 8x8-inch baking pan with parchment paper.

In a large bowl, whisk together melted butter and brown sugar until smooth. Add egg, molasses, and vanilla, mixing until combined.

In another bowl, whisk flour, ginger, cinnamon, nutmeg, cloves, baking powder, and salt.

Gradually fold dry ingredients into the wet mixture until just combined. Stir in white chocolate chips or pecans if using.

Spread batter evenly into the prepared pan.

Bake for 25–28 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs.

Cool completely in the pan before slicing into squares.

Prep Time: 10 minutes | Cook Time: 25 minutes | Total Time: 35 minutes

Kcal: Approx. 220 per bar | Servings: 12