This Savory Potato, Bacon & Leek "Crumble" is Guaranteed to Please

When we think of making a "crumble", most of us imagine the sweet, fruit-based version with apples or berries and a crumbly, sugar-based topping. But did you know you can also go the savory route? Today we're going to introduce you to a delicious, hearty variant with potatoes, bacon, leeks and a cheesy parmesan topping.