1. Prepare the enriched sweet dough by mixing flour, yeast, warm milk, eggs, butter, and sugar until smooth.
2. Knead the dough until soft and elastic, then let it rise in a warm place until doubled in size.
3. Mix cinnamon, sugar, and softened butter to create the cinnamon-sugar filling.
4. Roll out the risen dough into a large rectangle on a floured surface.
5. Spread the cinnamon-sugar butter evenly over the rolled-out dough.
6. Sprinkle chopped walnuts over the filling, if using.
7. Roll the dough up tightly from the long edge to form a log.
8. Use a sharp knife to cut the log lengthwise, exposing the cinnamon layers.
9. Twist the two halves together, keeping the cut sides facing up.
10. Shape the twisted dough into a circular wreath and pinch the ends together.
11. Place the shaped wreath on a parchment-lined baking sheet.
12. If desired, place an oven-safe ramekin in the center to help maintain the shape.
13. Cover the wreath and let it rise again until puffy.
14. Preheat the oven to 350°F while the dough finishes rising.
15. Bake the wreath for 25-30 minutes until golden brown and cooked through.
16. Let the bread cool slightly before drizzling with glaze or icing.
17. Slice and serve warm for the best texture and flavor.
18. Enjoy as a centerpiece for a holiday brunch or gathering.