This moist chocolate brownie sheet cake is rich, tender, and incredibly easy to bake. Perfect for birthdays, parties, or anytime you want a crowd-pleasing chocolate treat.
250 g all-purpose flour (2 cups)
50 g cocoa powder (½ cup)
1½ tsp baking powder
Pinch of salt
4 eggs
200 g sugar (1 cup)
1 tsp vanilla extract
200 ml milk or buttermilk
200 g unsalted butter (or 200 ml neutral oil)
100 g dark chocolate, chopped (optional)
Preheat oven to 350°F (175°C). Grease or line a baking sheet (30×40 cm).
Melt butter and chocolate together. Let cool slightly.
In a large bowl, whisk eggs, sugar, vanilla, and milk.
In a separate bowl, sift flour, cocoa, baking powder, and salt.
Stir dry ingredients into wet, then add melted chocolate mixture.
Pour batter into pan and smooth evenly.
Bake for 20–25 minutes, until a toothpick comes out with moist crumbs.
Cool fully. Dust with powdered sugar or glaze if desired.
Use oil for a dairy-free version. Add chopped nuts or chocolate chips for texture. Stores well at room temperature or can be frozen.