Preheat oven to 375 degrees F and line large baking sheet with parchment paper.
In a large bowl, add melted butter, milk, sugar, baking powder and salt. Whisk well to combine.
Add flour and stir with spatula to combine, then proceed to mix with your hands until a ball of dough forms and it's no longer sticky. If it's sticky add a bit more flour.
Transfer dough on a counter, gently form a log and cut into 12 even sized pieces. You can also use the scales. Roll each piece into a ball and place on a baking sheet.
In a small bowl, whisk the egg and brush rolls with it.
Bake for 20-25 minutes or until puffy and golden brown. Remove from the oven and enjoy!
Notes
Store: Keep in an airtight container in a cool dark place for 3-4 days.
Freeze: Freeze in a resealable Ziploc bag for 3 months. Thaw on a counter for a few hours or pop into microwave or toaster.