Directions:

Prepare the Dough:
In a small bowl, combine the yeast with warm milk to activate it. Let the mixture rest for 5-10 minutes until it starts to bubble and froth.
In a large bowl, sift the flour, sugar, and salt together thoroughly.Pour in the yeast mixture along with the melted butter, egg, and vanilla extract. Mix until a dough forms.
Knead the dough on a floured surface for 5-7 minutes until it’s smooth and elastic.
Transfer the dough to a greased bowl, cover it with a damp cloth, and let it rest in a warm spot for 1-2 hours until it has risen and doubled in size.

Prepare the Filling:
Combine the brown sugar and cinnamon in a separate small bowl.
Roll out the risen dough on a floured surface into a rectangle (about 12×18 inches).
Evenly spread softened butter over the dough, then sprinkle the cinnamon-sugar mixture across the surface.. Then, scatter the chopped walnuts across the surface.

Roll and Slice:
Carefully roll the dough into a log, starting from the long side.. Pinch the seam to seal.
Using a sharp knife or dental floss, slice the log into 12 even rolls.
Place the rolls in a greased baking dish. Cover and let rise for 30-45 minutes.

Bake:
Preheat the oven to 350°F (175°C).
Bake for 20-25 minutes, or until the rolls turn golden and are fully cooked. Remove and let cool slightly.

Prepare the Cream Cheese Frosting:
Beat the softened cream cheese and butter together until smooth and creamy.
Gradually add the powdered sugar, then mix in the vanilla extract and heavy cream until you reach a desired consistency.
Generously frost the warm rolls and serve immediately.

Serving and Storage Tips:

Serving: Serve these cinnamon-walnut rolls warm for the best texture and flavor. They can be paired with a cup of coffee, tea, or even a glass of milk.

Storage: Place any leftovers in an airtight container at room temperature, where they will stay fresh for up to two days. You can refrigerate them for up to a week, but warm them slightly before serving to retain the softness.

Freezing: These rolls can be frozen before baking. After slicing, place them in a baking dish, cover with plastic wrap, and freeze. When ready to bake, thaw in the fridge overnight and let them rise for about an hour before baking.