This cocoa cake is a simple, unfrosted chocolate cake with a soft, moist crumb and balanced cocoa flavor. Made with pantry staples and finished with a dusting of confectioners' sugar, it's perfect for everyday desserts or an afternoon coffee break.
Preheat oven to 350°F (175°C). Butter a 9-inch round (at least 2 inches deep) cake pan. Dust with flour and knock out the excess. Alternatively, you can use a baking spray with flour.
Whisk together the flour, cocoa, baking soda, and salt. Set aside.
Using an electric mixer on medium speed, beat the butter and brown sugar until pale and fluffy. Add the eggs, one at a time, beating well after each addition. Mix in the vanilla.
Add the flour mixture to butter mixture in batches, alternating with the water. Begin and end with flour. Mix just until combined.
Pour the batter into the prepared pan and spread evenly. Bake 50-60 minutes, until the cake is springy to the touch and a toothpick inserted into the center comes out clean.
Cool in the pan on a wire rack for an hour. Then invert onto a wire rack, then onto serving plate. Dust with confectioners' sugar before serving.
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Notes
Recipe slightly adapted from Gourmet.
Pan size: Use a light-colored metal 9-inch round cake pan that's at least 2 inches deep. The batter comes well up the sides of the pan before baking, which is exactly what you want.
Cocoa powder: I recommend natural unsweetened cocoa powder for the best flavor and results.
Storage: Store tightly covered at room temperature for up to 3 days. The cake stays wonderfully moist, and I think the flavor is even better on the second day.