Yes one pan, you mix the ingredients for this fudge cake right in the baking pan. No clean up!
Preheat oven to 350 degrees.
In an ungreased 9 x 13 pan, sift all dry ingredients.
Add the liquids and stir just until blended.
Place into the preheated oven and bake for 25 minutes.
Mix sugar, cornstarch, salt, and cocoa in a medium sauce pan. Whisk in the milk.
Stir constantly, heat over medium until it gets thick and starts to boil.
Continue stirring and boil for 1-2 minutes or until very thick. Remove from heat and stir in oil and vanilla.
Allow to cool to room temperature, then spread over the top of your cooled cake.
Garnish with chocolate curls and fresh berries.