This unique cake is a delicious way to enjoy the flavors of strawberry and rhubarb. The cake is made with a tender and moist crumb, infused with the nutty flavor of cornmeal, and topped with a layer of sweet and tangy strawberry rhubarb filling. To make the cake, cream together butter and sugar, then add eggs and vanilla. In a separate bowl, mix together flour, cornmeal, baking powder, and salt. Add the dry ingredients to the wet mixture, alternating with milk. Pour the batter into a greased baking dish, then top with the strawberry rhubarb filling. Bake until golden brown and serve warm with a dollop of whipped cream or a scoop of vanilla ice cream.