Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish and line the bottom with parchment paper.

Melt 1 cup of unsalted butter in a medium saucepan over medium heat. Add granulated sugar and dark brown sugar until smooth and remove from heat.

Incorporate 2 large eggs one at a time, whisking after each addition. Stir in 2 teaspoons of vanilla extract.

Sift together 1.5 cups of all-purpose flour, 0.33 cup of cocoa powder, and all spices and baking powder in a separate bowl.

Gradually add the dry ingredients to the wet mixture, folding until combined. Avoid overmixing.

Fold in 0.5 cup of molasses, 1 cup of chocolate chips, and 0.33 cup of crystallized ginger.

Spread the batter in the prepared baking dish evenly and bake in the preheated oven for 30-35 minutes.

Cool the brownies in the pan for about 20 minutes, then cut into squares.