Cinnamon Coffee Cake

Name: Cinnamon Coffee Cake
Cook time: 3 h 30 min
Total time: 3 h 30 min
Cuisine: American
Ingredients: 1 cup chopped pecans, toasted; 2 teaspoons ground cinnamon; 3 1/2 cups cake flour, divided, plus more for pan; 1 1/2 cups packed light brown sugar, divided; 1 1/2 teaspoons kosher salt, divided; 1/2 cup (4 oz.) chilled unsalted butter, cut into 1/2-in. pieces; 3/4 cup (6 oz.) unsalted butter, softened; 1 cup granulated sugar; 4 large eggs; 2 teaspoons vanilla extract; 2 teaspoons baking powder; 1/4 teaspoon baking soda; 1 (8-oz.) container sour cream; Shortening, for greasing pan