Preheat oven to 350º F.
In a mixing bowl combine the flour, sugar, baking powder, and salt together.
Add the butter and cut in with a fork until crumbly.
Make a well in the center, and whisk in egg, milk, and vanilla.
Mix together until all ingredients are just combined. Don't overmix.
Pour into a greased and floured, or parchment lined 8x8 inch baking pan.
Bake in the preheated oven for 20 minutes or until a toothpick inserted into the middle comes out clean.
Remove from oven and allow to cool completely.
When cool, loosen the edges of the cake from the pan and turn it onto a serving platter or cooling rack.
Beat heavy cream until stiff peaks form.
In a separate bowl, beat cream cheese and powdered sugar together until smooth, then fold in the whipped cream.
Spread over cooled cake.
Top with sliced strawberries.
Refrigerate until ready to serve.