01 -
Combine lukewarm whole milk, granulated sugar, and active dry yeast in a large bowl. Let it sit until foamy, about 5 minutes. Mix in melted unsalted butter, eggs, and salt thoroughly. Gradually add all-purpose flour and stir until a soft dough forms. Knead on a floured surface for 6 to 8 minutes until smooth and elastic. Place in a greased bowl, cover, and let rise in a warm spot until doubled in size, approximately 1 hour.
02 -
Melt unsalted butter in a medium saucepan over medium heat. Stir in packed brown sugar, pure maple syrup, and salt until fully dissolved. Cook for 2 to 3 minutes, ensuring the caramel is smooth and bubbling. Pour evenly into a greased 9x13-inch baking dish. Sprinkle chopped walnuts over the caramel layer.
03 -
Combine packed brown sugar and ground cinnamon in a small bowl until fully blended.
04 -
Roll dough on a floured surface into a 16x12-inch rectangle. Spread softened butter evenly over the surface. Sprinkle the cinnamon-sugar filling uniformly on top. Starting from a long edge, roll the dough tightly into a log. Cut into 12 equal slices.
05 -
Place buns cut-side up atop the walnut caramel in the prepared baking dish. Cover loosely and let rise in a warm place until puffy, about 30 to 40 minutes.
06 -
Preheat oven to 350°F. Bake buns for 25 to 30 minutes until golden brown on top and caramel bubbles at the edges.
07 -
Remove the dish from the oven and cool for 5 minutes. While warm, invert the baking dish onto a serving platter so the caramel and walnuts form the topping.
08 -
Whisk powdered sugar, pure maple syrup, and milk until smooth and pourable. Drizzle generously over the warm sticky buns before serving.