Bublanina(Blueberry Cake) - cooking recipe

Ingredients

5 Tbsp. butter
11 Tbsp. sugar
3 egg yolks
3 egg whites
12 Tbsp. flour, sifted
1/2 pt. blueberries

Preparation

Cream butter well, add sugar and cream well.
Add egg yolks and beat well.
Beat egg whites until stiff.
Add 3 tablespoons egg whites and 3 tablespoons flour into batter-sugar mixture. Alternate until all whites and flour are incorporated.
Put in greased and floured 8 x 8 x 2-inch pan.
Add blueberries.
Bake at 350\u00b0 for 25 minutes.