Preheat the oven to 375F.
Grease and line the baking pan with parchment paper.
In a large bowl, whisk together the sugar, flour, cocoa powder, salt and baking powder.
Add the oil, milk, vanilla extract and eggs into the flour mixture and whisk until combined.
Pour the batter into the prepared pan and bake for 25 - 30 minutes.
Let cool completely.
