Prompt: Chocolate cake recipe

3/4 cup unsweetened cocoa powder
1 1/2 cups granulated sugar
2 large eggs
2 teaspoons vanilla extract
1 1/2 cups all-purpose flour
1/2 teaspoon baking soda
Confectioners’ sugar
1. Preheat oven to 350 degrees. Butter and flour a 9×13-inch baking pan.
2. In a medium bowl, whisk together cocoa powder, sugar, eggs, and vanilla extract.
3. In a small bowl, whisk together flour and baking soda.
4. Add cocoa mixture to the medium bowl, and stir until combined.
5. Pour mixture into the prepared pan.
6. Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out clean.
7. Cool cake in the pan for 10 minutes before transferring to a wire rack to cool completely.
8. Sprinkle with confectioners’ sugar before serving.