1. Mix flour, sugar, baking powder, baking soda, and salt. Add butter, eggs, vanilla, cinnamon, and milk.
Instructions
2. Combine brown sugar with cinnamon in another bowl. Spoon half the batter into a Bundt pan. Add the brown sugar mixture followed by the rest of the batter.
3. Bake for 1 hour. Whisk cinnamon, confectioners' sugar, and milk to make the glaze. Drizzle over the cake.