Like a mash-up of brown butter brickle ice cream and hazelnut biscotti, the Brown Butter Hazelnut Crunch doughnut at Union Square Donuts is crafted using a butter-based brioche dough (which gives it a light and airy, almost pastrylike texture, according to co-owner Josh Danoff). It’s topped with a butter glaze and sprinkled with toasted, crushed hazelnuts, and it's a perfect example of the globally inspired doughnuts at the Somerville store.
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