• In a small bowl, combine the warm milk and yeast. Let it sit for 5-10 minutes until it becomes frothy.
• In a large mixing bowl, combine the sugar, melted butter, eggs, and yeast mixture.
• Gradually add the flour and salt to the wet ingredients, mixing until a dough forms.
• Knead the dough on a floured surface for about 5 minutes until it becomes smooth and elastic. You can also use a stand mixer with a dough hook for this step.
• Place the dough in a greased bowl, cover it with a clean kitchen towel, and let it rise in a warm place for 1-2 hours, or until it has doubled in size.

Prepare the Filling

• In a small bowl, mix together the softened butter, brown sugar, and ground cinnamon until well combined.

Assembly

• Once the dough has doubled in size, punch it down to release the air.
• Roll out the dough on a floured surface into a large rectangle, about 1/4-inch thick.
• Spread the cinnamon-sugar butter mixture evenly over the dough.
• Sprinkle the chopped nuts (if using) evenly over the buttered dough.
• Roll the dough up tightly, starting from one long edge, to form a log.
• Cut the log into 12 equal pieces.

Baking

• Place the cut rolls in a greased 9x13-inch baking pan, leaving a little space between each.
• Cover the pan with a kitchen towel and let the rolls rise for another 30 minutes while you preheat your oven to 350°F (175°C).
• Bake the rolls in the preheated oven for 25-30 minutes or until they are golden brown and baked through.

Make the Maple Frosting

• In a bowl, whisk together the melted butter, pure maple syrup, powdered sugar, vanilla extract, and a pinch of salt until smooth.

Frost the Sweet Buns

• Once the buns are out of the oven, let them cool for a few minutes.
• Drizzle the maple frosting over the warm sweet buns.

Serve

• Serve the sweet buns warm and enjoy!