Preheat your oven to 350°F and prepare two 9 inch cake tins.
In a large bowl, cream together the room temperature butter and sugar until light and fluffy..
Beat in the eggs, one at a time until completely combined. Be sure to scrape down the sides of the bowl as you go.
In a small bowl, mix together the flour, salt and baking powder. Stir the dry ingredients into butter mixture.
Add the milk and vanilla and mix until completely combined.
Spread the cake batter in your prepared pans and bake for 12-15 minutes or until they test done. The center of the cake should bounce back when lightly touched with a finger.
Cool for 10 minutes in the pans and then turn out onto a wire cooling rack to cool completely.
To serve, spread jam over bottom layer of cake. Top with strawberry slices if using, the spread with fresh whipped cream. Top with second layer and dust the top of the cake with powdered sugar.