To prepare the cake: preheat oven to 350 F. Grease a round 9-inch pan and dust with some flour. Shake out the excess flour.

In a mixing bowl, combine all the cake ingredients.

Beat slowly for 1 minute before increasing to high speed. Continue to beat until you get a thick and well combined batter.

Pour the batter into the greased pan and spread evenly.

Place the pan in the oven and bake until the cake pulls away from the sides for about 45 minutes. Take it out and let the cake cool for 10 minutes before removing it from the pan.

To prepare the topping: combine the sugar, cocoa powder, milk, butter, and corn syrup in a saucepan and place over medium heat.

When the sauce gets warm, after about 3 minutes, remove from heat and stir in the powdered sugar and the vanilla. Mix well.

Let the topping cool slightly and then spread it over the top and the sides of the cake. All the cake should be covered. Let set for 20-30 minutes before serving.