"Raised Sourdough Donuts is one of those recipes you just want to make over and over again! Fluffy and drizzled with a sweetened glaze, these blueberry donuts are versatile and easy to make! Mmm, sourdough donuts. Soft, sweet, and slightly tangy with a crispy exterior– these donuts with sugar are irresistible and the best way to use up any extra sourdough discard. We like to bake these donuts during the summertime with freshly picked plump blueberries because the flavors are juicy and sweet. "