I posted already about my favourite Streusel cake recipe. Could a better recipe exist?
Add a layer of creamy vanilla custard between dough and streusel and you will get the best streusel cake ever!
I found the inspiration for this on Juttas Blog, who discovered the pudding streusel cake at Dampfi kocht und backt. I used my streusel cake recipe (which works greatly with sweet starter instead of pâte fermentée, too) but added a layer of homemade custard. And this mixture of soft custard and crisp streusel is just divine!