Preheat your oven to 350°F (177°C) and prepare a 9x9-inch baking dish by lining it with parchment paper.

In a large mixing bowl, combine 1 cup of melted unsalted butter with 1 ½ cups of light brown sugar. Stir until smooth, then add 2 large eggs, 2 tablespoons of molasses, and 1 teaspoon of vanilla extract. Mix until thick and creamy.

In a separate bowl, whisk together 2 ½ cups of all-purpose flour, 1 tablespoon of ground ginger, 2 teaspoons of cinnamon, 1 teaspoon of baking powder, and ½ teaspoon of kosher salt.

Slowly add the dry ingredient mixture into the bowl with your wet ingredients. Stir gently until all flour is incorporated.

Pour the brownie batter into the prepared baking dish and spread evenly. Bake for 30-35 minutes.

Once baked, cool in the pan for about 15 minutes before transferring to a wire rack. Dust with confectioners’ sugar before slicing and serving.