To make the cake, whisk together the dry ingredients in a small bowl. In a mixer fitted with paddle attachment beat together the softened butter and sugar on medium speed until light and fluffy. Add the vanilla and eggs one at a time, beating until thoroughly incorporated. Scrape the bowl once or twice to make sugar everything is incorporated. Gradually mix half of the dry ingredients on low speed until JUST combined then stir in the milk. Scrape the bowl. Then with a spatula fold in the remaining flour mixture until just combined. Scrape the batter on top of the fruit and smooth into an even layer.