For the cake , preheat the oven at 350° F (180°c). Grease the pan and set aside .
Sift together the flour , cornstarch , baking soda and salt .
Cream the butter and the 1 1/2 cups sugar with the help of a hand blender till light and fluffy . Add the eggs one at a time , ensuring each addition to be well mixed in.
Add the sour cream and the vanilla and mix until combined .
Add the dry ingredients and mix till no lumps are seen .
Bake the cake for about 45 - 50 mins . Remove the cake immediately and place on a cooling rack and allow to cool completely .
Stem and halve the strawberries and mash them . Sprinkle the remaining 2 tbsp sugar over them and allow to sit for 30 mins.
For the icing , combine the powdered sugar , cream cheese , vanilla , butter and dash of salt in a bowl . Mix until very fluffy .
Slice the cakes in half to make two smaller cakes . Spread the strawberries evenly over each cut sides of the cake halves , pouring on the juices as well .
Place the cakes in the freezer just for 5 mins , just to make icing easier .
Remove the cake halves . Use a little less than one third of the icing and to spread on top of the strawberries in the bottom layer .
Add half of the remaining icing on the top , spreading evenly .
Leave it plain or garnish with strawberry halves .