Raspberry Buttermilk Cake

Since you still can get some fresh raspberries (the frozen ones are just not right, are they?) it's possibly one of the best ideas to bake a cake with them! The recipe I enclose is extremely easy, you practically don't have to buy anything, or not much, to make it, plus it's really quick.
For Polish version of the recipe: Ciasto z malinami na maślance
and for English one: Raspberry Buttermilk Cake