Step 1 In the bowl of a food processor, combine the almonds and flour and pulse until the almonds are coarsely chopped and combined with the flour. Add the brown and granulated sugars and cinnamon and pulse again until combined. Add the butter cubes and pulse again until the butter is broken up and the mixture is crumbly.
Step 2 The crumble topping can also be made by hand: Chop the almonds finely and stir together with the flour, brown and granulated sugars and cinnamon, then add the butter and rub together with your fingers until the butter is broken up and the mixture is crumbly.