This easy Dutch Apple Pie is a traditional, old-fashioned dessert that always wins rave reviews! With the flaky pastry crust, tender, warmly-spiced apples, and buttery oat and brown sugar streusel crumb topping, it tastes like a cross between classic apple pie and apple crisp. The apple crumble pie gives you the best of both worlds, and it's perfect with a scoop of vanilla ice cream!