Triple chocolate tres leches cake is a rich and decadent chocolate sponge cake soaked in a sweet and chocolatey three milk mixture. This chocolate version of the classic Mexican dessert is the ultimate cake to serve for any occasion!
In a large bowl, combine sugar, eggs, milk, oil, and vanilla extract. Pour the dry ingredients into the large bowl and whisk until just combined, then pour the batter into the prepared pan and bake.
While cake is cooling, make three milk mixture (tres leches), Whisk sweetened condensed milk, chocolate milk, and heavy whipping cream in a medium bowl.
To make the whipped topping, add powdered sugar, cocoa powder, heavy cream, and vanilla extract to a large bowl. Beat on high until soft to stiff peaks form.