In the bowl of stand mixer fitted with a paddle attachment, stir together water, 2 tablespoons sugar, and yeast. Let mixture sit for 5-10 minutes, or until foamy. Stir in remaining tablespoon sugar, salt, and butter until combined. Mix in flour one cup at a time. Stir in cinnamon chunks until just combined. Replace paddle attachment with kneading hook. Knead dough for 3-5 minutes, or until smooth. Place dough in an oiled bowl, turning dough to coat. Cover and let rise until doubled in bulk, about 1 hour. Shape dough into loaf, and place into greased 9x5-inch loaf pan. Cover and let dough rise 30 minutes, or until dough reaches top pan. Toward the end of the rising time, preheat oven to 350 F. Bake for 30 minutes, or until golden brown.