INGREDIENTS
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* 1 cup unsalted butter, softened * 2 cups granulated sugar * 3 large eggs * 2 3/4 cups all-purpose flour, divided * 1/2 tsp. baking soda * 1/2 tsp. salt * 1 cup sour cream * 1 Tb. vanilla extract * 1 lb. diced fresh (or frozen) peaches, with or with