Buttermilk Coffee Cake

Bahan-bahan (8 porsi)

• 1⅔ cups all-purpose flour
• ¾ cup sugar
• 1 teaspoon cinnamon
• ½ teaspoon baking soda
• ½ cup butter, very soft, room temperature
• 1 cup buttermilk
• ¼ cup butter
• ¾ cup light brown sugar
• 1 teaspoon cinnamon
• ½ cup chopped pecans