Heat the oven to 350 degrees.
Blend together 1 large egg, 1 egg yolk, 1 tsp vanilla, 5.5 Tbsp butter, ¾ C. Sour cream and ½ C. Sugar in a mixing bowl until well combined.
Stir in the baking powder, baking soda, ¼ tsp salt and 1 ½ C all purpose flour.
Spread the batter into the bottom of a well greased springform pan.
Beat together 8 oz cream cheese, ¼ cup sugar and 1 egg white until smooth and creamy.
Spread the cream cheese mixture over the cake layer, and then top with the raspberries.
Cut the 3 tbsp of cold butter into the ½ cup flour and ⅓ cup of sugar until it forms a crumbly mixture.
Sprinkle the streusel topping over the raspberries.
Bake for 40-45 minutes.
Cool the cake a bit before releasing it from the Springform pan.