Source: Blueberry Cake Ingredients: Cake Batter All purpose flour-130gms Baking Powder-1tsp Salt-1/4 tsp Unsalted Butter at room temperature-56gms Granulated White Sugar-100gms Egg-2 Vanilla Extract-1/2 tsp Milk-80ml Blueberry crush-240ml(original recipe suggests fresh blueberries 480ml) Streusel Topping All purpose flour-45gms Granulated White Sugar-65gms Ground Cinnamon-1/2tsp Unsalted butter-56gms Method Prep Preheat the Oven at 180 degrees. Grease with Butter or Spray the cooking pan. Streusel Topping In a large bowl mix together flour, sugar and cinnamon powder. Coarsely blend the cut butter pieces into the flour mixture, until it resembles crumbs. Set aside while you make the cake batter. Cake batter In a separate bowl whisk together the flour, baking powder and salt. In another bowl beat the butter until smooth with a blender.Add the sugar until light and fluffy.Add the egg and vanilla and beat until inc...