01 - Combine warm milk, warm water, and yeast in the bowl of a stand mixer. Let sit for 5 minutes until foamy and activated.
02 - Add sugar, eggs, and melted butter to the yeast mixture. Mix until combined. Gradually add flour and salt, mixing with the dough hook until a soft, smooth dough forms. Knead for 6–8 minutes until elastic and smooth.
03 - Place dough in a lightly greased bowl, cover with plastic wrap or a clean towel, and let rise in a warm, draft-free area for 1–1.5 hours until doubled in size.
04 - Melt butter in a saucepan over medium heat. Add brown sugar, heavy cream, honey, and salt. Stir continuously until smooth and bubbling, about 2–3 minutes. Pour the glaze evenly into a greased 9x13-inch baking dish.
05 - In a small bowl, combine dark brown sugar and Vietnamese cinnamon. Mix thoroughly until evenly blended.
06 - On a lightly floured surface, roll the risen dough into a 16x12-inch rectangle. Spread softened butter evenly over the surface, sprinkle with the cinnamon-sugar mixture, then scatter chopped dates and nuts (if using).
07 - Roll the dough tightly from the long edge into a log. Using a sharp knife or unflavored dental floss, cut into 12 equal slices.
08 - Arrange the sliced buns cut-side up directly on top of the sticky glaze in the baking dish. Cover and let rise for 30–40 minutes until puffy and noticeably expanded.
09 - Preheat oven to 350°F. Bake buns for 25–30 minutes until golden brown on top and fully cooked through. The glaze should be bubbling around the edges.
10 - Remove from oven and let rest for 5 minutes. Carefully invert the baking dish onto a serving platter so the sticky glaze coats the tops of the buns. Allow to cool slightly before serving warm.