How to make
Prepare small baking trays, grease or cover them with baking paper. Preheat the oven to its highest degrees. Beat the sugar, flour and milk well and distribute the mixture in the trays.
Put 1 teaspoon of whipped sour cream in each and put them to bake for about 20 minutes. Remove from the oven and in each tray, distribute the raspberries and then the blueberries in the middle.
Sprinkle the mini pies with a little sugar and put them in the oven for another 10-odd minutes.