>> source: https://food52.com/recipes/82973-go-to-streusel-crumble-recipe >> time required: 15 minutes >> image: https://images.food52.com/n4ZaXLR9rZhC7GeWPXO1J603ncU=/1200x1200/97bf60f4-e6b3-4711-97b7-4bdda9faf15d--EveryoneCanBake_TO_78_Ansel39973.jpg Preheat the oven to 350°F (175°C). Line a #sheet pan{} with #parchment paper{}. In a #stand mixer{} fitted with the paddle attachment (or in a large bowl using a spatula), combine the @all-purpose flour{250%g}, @hazelnut flour{250%g}, @sugar{250%g}, and @fleur de sel{6%g}. Add the @butter{250%g} and mix to combine. Using your fingers, break up the streusel dough into pieces about the size of marbles. (Alternatively, push the dough through the holes of a wire rack to get pieces of a more uniform size.) Spread the streusel over the prepared pan and bake until golden, 10 to ~{12%minutes}. The edges should be crunchy and the inside still soft. Let cool completely.