Preheat the oven to 325°F. Line 16 muffin cups with paper liners.
In the bowl of a stand mixer, mix cake mix, water, eggs, oil, 1 tablespoon cinnamon, vanilla and honey. Mix on medium speed for 2-3 minutes or until combined and fluffy.
Pour batter into muffin liners until ⅔ full.
In a small bowl, combine 1 tablespoon sugar and remaining ½ tablespoon cinnamon. Sprinkle over the batter.
Bake cupcakes for 22 minutes, or until a toothpick inserted in the middle of a cupcake comes out clean. Remove cupcakes from muffin tin and let cool.
While cupcakes are cooling, make frosting. In a large bowl, cream together butter, powdered sugar, honey, cinnamon, milk and a pinch of salt. Beat until combined and smooth. Add more milk until the desired consistency is reached.
Pipe frosting onto cooled cupcakes and sprinkle with more cinnamon sugar, if desired.