Preheat your oven to 350°F (175°C) and grease a 9x9 inch baking pan.
Melt the butter in a medium saucepan over low heat.
Remove the saucepan from the heat and stir in sugar, eggs, and vanilla.
Mix in cocoa, flour, salt, and baking powder until well combined.
Pour the batter into the prepared baking pan and spread evenly.
Optional: Sprinkle chocolate chips on top for extra richness.
Bake in the preheated oven for 20-25 minutes, or until a toothpick comes out clean.
Let the brownies cool in the pan for about 10 minutes before slicing.
Serve warm or allow to cool completely for a fudgier texture.
Enjoy your homemade brownies with a glass of milk or your favorite beverage!