INGREDIENTS
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1 3/4 cup +2 Tbsp all-purpose flour, divided
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1 tsp baking powder
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1/4 tsp baking soda
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1/2 tsp salt
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1/4 cup unsalted butter, softened
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3 Tbsp vegetable oil
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3/4 cup + 2 Tbsp granulated sugar
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2 large eggs
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1/2 tsp vanilla extract
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1/3 cup buttermilk
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1/3 cup sour cream
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1 Tbsp raw turbinado sugar, for topping
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2 cups frozen blueberries (don't thaw)*