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| all-purpose flour (unsifted): 1 cup |
| granulated sugar: 1 cup (divided) |
| baking powder: 1 1/2 tsp |
| salted butter: 1/2 cup |
| eggs: 1 |
| eggs: 3 (yolks) |
| sour cream: 2 cups |
| vanilla extract: 1/2 tsp |
| blueberries: 3 cups |
| whipped cream topping |
Credit: Food.com