01 -
Warm up your oven to 350°F (175°C). Butter a 9-inch springform pan and put parchment on the bottom. Leave it aside.
02 -
Beat together cream cheese and sugar until smooth. Add in the egg white and mix slowly until everything's just blended. Put aside for now.
03 -
Combine flour, baking powder, baking soda, and salt in a bowl. Set this mix aside.
04 -
Using an electric mixer, beat butter and sugar on medium speed. Toss in the egg, yolk, and vanilla, then blend it all. Add the dry mix bit by bit, switching with sour cream. Mix till everything's combined.
05 -
Pour your cake batter into the pan and flatten it out. Add the cream cheese mix on top. Scatter raspberries all over the cheese layer.
06 -
Mix sugar, flour, and cold butter chunks in a bowl. Use a fork to mash it all until you get tiny crumbs.
07 -
Toss the crumbly streusel over the berries. Let it bake for 40-45 minutes, or until you can stick something in the middle and it comes out clean.
08 -
Let the cake cool for 20 minutes on a rack. Run a knife around the edges to loosen it up. Take off the springform ring. Keep leftover cake in the fridge.