This topping is my take on a crumble topping, based on the recipe found here.
Step 1: Ingredients
> 3/4 cup flour
> 1/3 cup packed brown sugar
> 3 tablespoon granulated sugar
> a pinch of salt (~ 1/8 teaspoon)
> 1 teaspoon cinnamon
> 1/2 teaspoon vanilla extract
> 6 tablespoon cold unsalted butter, cut into pieces
The original recipe says this can be done in a bowl, with your hands. If you have a food processor, though, that works beautifully.