Blueberry Cake

• 125 grams butter
• 1 cup sugar
• 2 large eggs separated
• 1 tsp vanilla
• 1/2 cup milk1 1/2 cups blueberries lightly floured
• 1 1/2 cups flour
• 1 tsp baking powder
• 1/2 tsp salt

1. Cream butter and sugar
2. Add egg yolks and vanilla 
3. Stir in 1/3 flour and baking powder sifted together
4. Stir in 1/2 milk
5. Add another 1/3 flour
6. Stir in remaining milk then remaining flour
7. Fold in stiffly beaten egg whites then blueberries
8. Sprinkle top with sugar
9. Bake in medium oven for 45 - 50 minutes