Cream Cheese Coffee Cake with Cinnamon Streusel

Name: Cream Cheese Coffee Cake with Cinnamon Streusel
Cuisine: European, German
Ingredients: 2 1/2 cup all purpose flour; 1 cup granulated sugar; 1/2 tsp baking powder; 1/2 tsp baking soda; 1/4 tsp kosher salt; 3/4 cup unsalted butter, softened; 3 eggs; 2 tsp vanilla extract; 2/3 cup buttermilk; 2 pkg (8oz each) cream cheese, softened (filling); 1/2 cup granulated sugar (filling); 1 egg (filling); 1 cup light brown sugar (streusel); 1/3 cup granulated sugar (streusel); 2 tsp ground cinnamon 1/4 tsp kosher salt (streusel); 1 cup unsalted butter, melted (streusel); 3 cup all purpose flour (streusel)