Preparing the Dough:

1. Mixing the Ingredients:
   In a large mixing bowl, combine 4 cups of flour, 1/4 cup of sugar, 2 1/4 teaspoons of yeast, and 1/2 teaspoon of salt. In a separate bowl, warm 1 cup of milk and 1/2 cup of butter until the butter is melted. Let it cool slightly, then whisk in 2 eggs. Add the wet ingredients to the dry ingredients and mix until a dough forms.

2. Kneading the Dough:
   Transfer the dough to a floured surface and knead for about 10 minutes, until it becomes smooth and elastic. If the dough is too sticky, add more flour, one tablespoon at a time.

3. Letting It Rise:
   Place the dough in a greased bowl, cover it with a damp cloth, and let it rise in a warm place for about 1 hour, or until it has doubled in size.

Preparing the Filling: 4. Combining Cinnamon and Sugar:
In a small bowl, mix 1 cup of brown sugar and 2 1/2 tablespoons of ground cinnamon.

5. Spreading Butter:
   Roll out the dough on a floured surface into a large rectangle (about 16×12 inches). Spread 1/3 cup of softened butter evenly over the dough.

6. Sprinkling the Filling:
   Evenly sprinkle the cinnamon-sugar mixture over the buttered dough, ensuring it reaches all the edges.

Shaping and Baking: 7. Cutting the Dough into Rolls:
Starting from the long edge, roll up the dough tightly into a log. Cut the log into 12-15 equal pieces using a sharp knife or dental floss.

8. Arranging in a Baking Pan:
   Place the rolls cut-side up in a greased baking pan, leaving a little space between each roll.

9. Baking Time and Temperature:
   Preheat your oven to 375°F (190°C). Bake the rolls for 20-25 minutes, or until they are golden brown and cooked through.

Perfecting the Frosting: 10. Making a Smooth Cream Cheese Frosting:
In a mixing bowl, beat together 4 ounces of softened cream cheese, 1/4 cup of softened butter, 1 1/2 cups of powdered sugar, and 1 teaspoon of vanilla extract until smooth and creamy. If the frosting is too thick, add a splash of milk to achieve the desired consistency.

11. Adjusting Sweetness Levels:
    Taste the frosting as you mix, and adjust the amount of powdered sugar to your preference. Some might prefer a tangier frosting, while others might like it sweeter.