In a large bowl, whisk together 2 cups of flour, sugar and yeast
In a microwave safe bowl, heat butter and milk in microwave for 45 seconds. (It's okay if all butter isn't fully melted!)
Add the milk & butter mixture and egg to the flour & yeast mixture. Mix together until a thick, wet mixture is formed.
Add an additional 2 cups of flour and mix to fully incorporate. Add the remaining 1/2 cup of flour until a soft dough is formed.
Knead together dough until it becomes smooth, and soft. The final mixture should bounce back after a finger is indented into it.
Let the dough rest for 10 minutes, uncovered. Let the dough rest for 10 minutes, uncovered.
Roll dough into a long rectangle, about 12" by 15"