Prepare streusel. In a bowl, combine the flour, sugar, cinnamon. Add cold butter, diced. With a fork, RUB the butter into the flour to form a more or less coarse crumbs. It can be done by hand. Then I bowl with a little twist in a circle (by weight) to make the balls larger can be cracked, and again to scroll through the bowl. Put into the refrigerator.

For the dough mix the dry ingredients. In a separate bowl, mix milk, yogurt, softened butter into a homogeneous mass. Mix all the ingredients.

Knead until a connection ingredients into a uniform dough first with a spoon, then quickly hands to gather into a ball. Place it on the floured surface. Leave to rest for 10min.

Roll out the dough into a circle the size of the form (20cm) with a low rim. To facilitate rolling, put the dough between two sheets of baking paper. I stretch my hand in the form with cling film and a small cushion. Turn batter into a prepared form (the form to lay baking paper, grease the bottom and sides). Press down lightly with your fingers. Put in refrigerator for 30 minutes.

To prepare poppy filling, mix the dry mixture with the milk. Optionally, you can add the stuffing raisins, nuts, Apple slices.

Remove the film from the dough, spread the filling on the dough, evenly. I use plastic wrap.

Top evenly put streusel.

Bake in preheated oven at 180C until cooked and Golden brown 25-30 minutes. Cool on a wire rack, prostivshis cake to release from the mold.