Warm milk in microwave for about 1 minute (should be about 100 degrees F.)
Pour milk into a mixing bowl, then add in yeast and 1 TBSP sugar. Let sit for 5 minutes to allow the yeast to bloom.
Add sugar, eggs, salt, cinnamon, and butter to your mixing bowl with the yeast, and mix on low speed until combined.
Gradually add 4 1/2 cups flour to mixer. Once it starts to become difficult for the mixer to mix with the paddle, switch to dough hook.
Knead dough on low speed with the dough hook for 3-4 minutes. The dough should become tacky, rather than sticky. If it’s still sticky, add additional flour, one tablespoon at a time.
Gently form dough into a ball and place in a covered, lightly greased bowl. Let rise in a warm place for one hour, until dough has doubled in size.