Blueberry Cream Cheese Cupcakes Ingredients Blueberry Cupcakes 1/4 cup (1/2 stick or 57 grams) unsalted butter, room temperature 3/4 cup (169 grams) granulated sugar 2 large eggs 1/3 cup (76 grams) sour cream (or plain, non-fat yogurt) 1/4 cup (59 ml) vegetable oil 1 tablespoon vanilla extract 1 3/4 cups (175 grams) cake flour