Sour Cream Coffee Cake

Name: Sour Cream Coffee Cake
Ingredients: 1 teaspoon vanilla extract; 2 large eggs; 1¾ teaspoons baking powder; 1¾ cups all-purpose flour; ½ cup unsalted butter, room temperature; 1¼ cups granulated sugar; 1¼ teaspoons baking soda; ⅛ teaspoon salt; ½ cup cold, unsalted butter, cut into cubes; 1¼ cups sour cream; ¾ cup plus 2 tablespoons all-purpose flour; ½ cup cold, unsalted butter, cut into cubes; ¼ cup granulated sugar