This cinnamon swirl pound cake recipe is perfect for anyone who loves warm, spicy flavors. Made with cinnamon sugar and a buttery crumb topping, this cake is rich, moist, and delicious. To make the cake, cream together butter and sugar until light and fluffy, and then add eggs one at a time, beating well after each addition. Next, add the dry ingredients and cinnamon, and mix until just combined. Pour half of the batter into a greased loaf pan, and sprinkle with cinnamon sugar. Add the remaining batter, and top with a crumb topping made with butter, flour, and cinnamon sugar. Bake in a preheated oven until golden brown, and serve warm with a scoop of vanilla ice cream.