In a small bowl, combine warm milk, yeast, and 1 tablespoon of the granulated sugar. Let sit for 5–10 minutes until frothy.
In a large mixing bowl, whisk together the remaining sugar, melted butter, egg, and salt. Add the yeast mixture and stir to combine.
Gradually add flour, one cup at a time, mixing until a soft dough forms. Knead on a floured surface for 5–7 minutes until smooth and elastic.
Place dough in a greased bowl, cover with a towel, and let rise in a warm place for 1 hour or until doubled in size.
While dough rises, prepare filling: In a small bowl, mix brown sugar, softened butter, and cinnamon. Set aside.
Prepare topping: In a small saucepan, combine brown sugar, melted butter, and water. Heat over medium heat until bubbly and slightly thickened. Pour into a greased 9x13-inch baking dish.
Roll out risen dough into a rectangle (about 18x12 inches). Spread cinnamon filling evenly over the dough, then sprinkle with chopped nuts.
Starting from the long side, roll dough tightly into a log. Cut into 12 equal slices.
Arrange buns cut-side up in the prepared baking dish, spacing them evenly. Cover and let rise for 30 minutes.
Preheat oven to 350°F (175°C). Bake buns for 25–30 minutes, or until golden brown and cooked through.
Let buns cool slightly before serving. Drizzle any remaining topping from the pan over the buns.
Notes
These sticky buns are perfect for brunch or dessert. Serve warm with a dusting of powdered sugar if desired.