Making brownie cookies is simple, and by following these concise steps, you can bring this delightful dessert to life!

1. Preheat Oven: Begin by preheating your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Melt Chocolate and Butter: In a microwave-safe bowl, combine the semisweet chocolate chips and butter. Microwave in 30-second intervals until melted and smooth, stirring well between intervals.
3. Mix Sugar and Eggs: In a separate bowl, whisk together granulated sugar, eggs, and vanilla extract until the mixture is smooth and creamy.
4. Combine Mixtures: Slowly pour the melted chocolate mixture into the egg mixture, stirring until fully combined.
5. Add Dry Ingredients: In another bowl, sift together the all-purpose flour, cocoa powder, and salt. Gradually add this to the chocolate mixture, stirring until just combined. Be careful not to over-mix.
6. Incorporate Extras: If desired, fold in chocolate chunks or nuts for added texture and flavor.
7. Scoop Cookies: Use a cookie scoop or tablespoon to drop rounded balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
8. Bake: Place the baking sheet in the preheated oven and bake for 10-12 minutes, or until the edges are set, and the tops appear slightly glossy.
9. Cool: Once baked, remove from the oven and let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

Following these steps will lead you to irresistible brownie cookies that everyone will love!