Pour apples into baking dish(s), mounding a bit on top, if needed. Sprinkle with ½ cup sugar and the cinnamon. (If you want a less sweet dessert, omit this ½ cup sugar and just use the ½ cup sugar specified for the crumble topping.)
* ~ I used -inch ceramic, individual baking dishes and got 6 servings. If your dishes are smaller, you will probably get 8 servings.
** ~ You can actually use any good baking apple, though I wouldn’t use a super hard apple like a Granny Smith. I love baking with Golden Delicious or Ginger Gold apples.
*** ~ More and more grocers are beginning to carry these delicious Belgian cookies. They have them now at my most common market. Walmart and Target also carry them. If you can’t find Biscoff, you can make the recipe without. Just follow the directions and omit the cookies. If you have another favorite cookie, you could substitute it for the Biscoff cookies. I think Lorna Dunes or Nutter Butters or even graham crackers would be wonderful. I've also made this crumble lots of times without any cookies and it's fantastic.