To prepare a strawberry shortcake torte, you will first need to prepare the filling. Place the sugar, butter, eggs, vanilla, and vanilla extract in the bowl of an electric mixer and mix on medium speed until the mixture is light and fluffy, about 5 minutes. Add the flour, baking powder, salt and nutmeg and beat until combined. Gradually add the milk, beating after each addition until it is just combined and no streaks of flour remain. Pour the batter into the prepared tart shell and bake the tart for 1 hour at 350 degrees F. Remove the cake from the oven and let it cool for 10 minutes before cutting into squares.