1. Oatmeal ground in blender. Mix the flour, oatmeal and sugar, add the diced butter, water and knead the dough. Perhaps the water will need to add a little more, it took me 4, 5 tablespoons of water. Roll out in its formation (of a size to make enough bumpers) and spread into greased with butter form.
2. Make punctures with a fork in several places and put in the fridge for 30 minutes. Then we take out and send in a preheated 180 degree oven for 15 — 20 minutes. Meanwhile, prepare the stuffing. To do this, mix sour cream with powdered sugar, egg yolks and lemon zest and red currants, mix with starch separately. If you use frozen berries or canned (like me), you must first place them in a sieve and let drain thoroughly.
3. spread the filling on the dough and bake 15 minutes. Put the berries on top, then chilled, beat whites with a pinch of salt in the solid foam and add sugar gradually, continuing to whisk. We shift the beaten egg whites into the syringe and gently sweet is deposited on meringue pie. Again, we send it in the oven for 25 minutes, to the peaks of «clouds» were light — brown.