Follow these easy steps to create your incredible brownies:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan or line it with parchment paper for easy removal.
2. Melt Butter: In a medium saucepan, melt the butter over low heat. Remove from heat and let it cool slightly.
3. Combine Sugar and Eggs: In a large mixing bowl, combine the melted butter and granulated sugar. Whisk until well combined.
4. Add Eggs and Vanilla: Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract.
5. Mix Dry Ingredients: In a separate bowl, sift together the flour, cocoa powder, salt, and baking powder.
6. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring until just combined. Avoid overmixing.
7. Fold in Add-ins: If desired, fold in chocolate chips and chopped nuts for added texture and flavor.
8. Pour Batter: Pour the brownie batter into the prepared baking pan, spreading it evenly.
9. Bake: Place in the preheated oven and bake for 25-30 minutes or until a toothpick inserted in the center comes out with a few moist crumbs.
10. Cool: Remove from the oven and allow the brownies to cool in the pan for 10-15 minutes. Then transfer to a wire rack to cool completely before cutting.

These simple steps will guide you in creating a batch of brownies that are sure to impress!