1. Preheat oven to 350 degrees. In a food processor, pulse pitas and almonds until coarsely ground. Transfer to a medium bowl. Add butter, both sugars, salt, and cinnamon; toss to coat.

2. Transfer mixture to a large parchment-lined rimmed baking sheet and bake, stirring occasionally, until golden and crisp, 10 to 12 minutes. Let cool on sheet on a wire rack. Serve streusel sprinkled over ice cream, yogurt, or oatmeal.