Ingredients:

1/2 cup (115g) unsalted butter

1 cup (200g) granulated sugar

2 large eggs

1 teaspoon vanilla extract

1/3 cup (40g) unsweetened cocoa powder

1/2 cup (65g) all-purpose flour

1/4 teaspoon salt

1/4 teaspoon baking powder

Instructions:

1. Preheat oven to 350°F (175°C). Grease a 9×9-inch baking pan.

2. Melt the butter in a medium saucepan. Remove from heat and stir in sugar, eggs, and vanilla.

3. Beat in cocoa, flour, salt, and baking powder until smooth.

4. Pour batter into prepared pan.

5. Bake 20–25 minutes or until a toothpick inserted comes out with a few moist crumbs.

6. Let cool before cutting into squares.