Meanwhile, in a small saucepan over low heat, combine 3/4 cup sugar, 1/3 cup sugar, 3 tablespoons butter, and 2 tablespoons vanilla; cook, stirring, until the butter melts. Do not boil the mixture.
Remove the cake from the grill and use a spatula to remove it while it is still in the pan. Pour the hot butter sauce over the hot delicious cake.
