1-First step: melt the chocolate and butter Start by placing 4 ounces of chopped bittersweet chocolate and 1/4 cup unsalted butter in a microwave-safe bowl. Heat in 20-second intervals, stirring between each round, until the mixture is smooth and fully combined. Short bursts matter here because chocolate can seize or burn if it gets too hot too fast. When the mixture is glossy and silky, set it aside for a moment while you prepare the eggs and sugars.

2-Second step: beat the eggs and sugars In a large bowl, beat 1/2 cup granulated sugar, 1/2 cup packed light brown sugar, and 2 large room-temperature eggs until the mixture looks light and frothy. A hand mixer or stand mixer works best for this part. Beat for about 4 minutes if you want those crinkly tops that make brownie cookies look bakery-style.

3-Third step: add the melted chocolate mixture Pour the warm chocolate and butter mixture into the whipped eggs and sugar. Beat again until everything is fully blended. The batter should look thick, dark, and smooth at this point. Scrape down the bowl so no streaks of chocolate or sugar hide at the bottom.

4-Fourth step: mix in the dry ingredients Add 2/3 cup all-purpose flour, 1/4 cup unsweetened cocoa powder, 1/2 teaspoon salt, and 1/2 teaspoon baking powder to the bowl. Stir gently until the dry ingredients are mostly combined. The dough will look thick and slightly sticky, and that is exactly what you want for easy fudgy brownie cookies.

5-Fifth step: fold in the chocolate chips Stir in 1/2 cup semisweet chocolate chips until they are evenly spread through the dough. These chips give you little bursts of melted chocolate in every bite. They also help the cookies stay extra rich, which is perfect if you love a bold chocolate flavor.

6-Sixth step: chill the batter Cover the bowl and chill the batter for 30 minutes. This step is not optional if you want thick cookies with crinkly tops and less spreading. Chilling firms the butter and helps the dough scoop cleanly.

7-Seventh step: prep the oven and pans While the dough chills, preheat your oven to 350°F. Line baking sheets with parchment paper so the cookies release easily after baking. Parchment also helps the bottoms bake evenly and keeps cleanup simple.

8-Eighth step: scoop and space the dough Use a scoop to portion the dough into 2-tablespoon balls. Place them about 3 inches apart on the prepared baking sheets so they have room to spread. A cookie scoop helps make all the cookies the same size, which means they bake more evenly.

9-Ninth step: bake until cracked and set Bake the cookies for 8 to 10 minutes, or until they have spread and cracked on top. The edges should look set, but the centers may still seem a little soft. That is what gives these brownie cookies their fudgy finish after cooling.

10-Final step: cool completely on the pans Let the cookies cool completely on the pans before moving them. This final rest lets the centers finish setting without getting overhandled. Once cool, they should have crisp tops, chewy edges, and soft middles.