In the bowl of a stand mixer, combine water, sugar, and yeast. Let sit for 5 minutes.
In a separate bowl, mix flour, salt, cinnamon, and raisins. Mix into wet ingredients.
Using a dough hook, knead for 5 minutes.
Place dough into a lightly oiled bowl and cover with plastic wrap or a damp towel. Let dough rise for 60 minutes, or until doubled in size.
Preheat oven to 425 and bring a pot of water to a boil.
Turn dough out onto floured surface and divide into 6-8 pieces. Shape each piece into a ball. Pinch through the center of the ball using thumb and middle finger and stretch out gently for form the bagel shape.
Place shaped bagels into the boiling water. Boil for 90 seconds per side. Transfer to baking sheet lined with parchment and brush with milk.
Bake 18-20 minutes or until golden.