A Dutch Apple Pie recipe typically refers to an apple pie topped with a crumble topping. I found no history of this dessert having a connection to the Netherlands, though. Instead, it looks like the Pennsylvania Dutch settlers were influenced by both German and French, not the Dutch. Flaky crusted pies were topped with crumbles, which often contained walnuts. But a kind reader of my blog,  who lives in Amsterdam, brought this perspective: In Holland, we have "Appel Kruimel Taart", which translates to "Apple Crumb Pie". He said it's been around for hundreds of years. I stand corrected!