Step 1: In a large bowl, combine warm milk, granulated sugar, and yeast. Let sit for 5-10 minutes until foamy.
Step 2: Add melted butter, eggs, salt, and 2 cups of flour. Mix until smooth, then gradually add remaining flour until a soft dough forms.
Step 3: Knead the dough for 8-10 minutes on a floured surface until elastic. Place in a greased bowl, cover, and let rise in a warm place for 1 hour.
Step 4: Prepare the topping by mixing 1/2 cup softened butter, 1 cup brown sugar, and 1/4 cup maple syrup. Spread this in the bottom of a 9×13 inch baking pan and sprinkle with pecans.
Step 5: Roll out the risen dough into a 12×18 inch rectangle. Spread with extra butter, 1/4 cup brown sugar, and cinnamon. Roll tightly into a log.
Step 6: Cut the log into 12 even slices and place them on top of the pecan mixture in the pan. Cover and let rise for another 45 minutes.
Step 7: Bake at 350°F (175°C) for 25-30 minutes until golden brown. Immediately flip the pan onto a serving tray so the caramel and pecans are on top.
Step 8: Whisk the remaining maple syrup with a touch of powdered sugar if desired, and drizzle over the warm buns before serving.