Combine all dry ingredients in a mixing bowl of stand mixer fitted with a dough hook.
In a mixing bowl, whisk all wet ingredients together. Make sure the melted butter is warm or at room temperature. They will solidify if you whisk hot butter into the egg and milk mixture. If so, discard the mixture and start over
At a slow speed, gradually add wet ingredients to dry ingredients and mix until the dough starts to come together approximately 2 minutes. Scrape down the sides of the mixing bowl if necessary.
Increase the speed to medium and knead until the dough is smooth and pull away from the mixing dough.
Transfer the dough to a lightly floured surface and knead with your hands.
Use your fingertips to gently lift and fold the edge of the dough that's farthest away from you toward the middle. Then, turn the dough 90 degrees and fold again.
Repeat turning and folding the dough until it forms a smooth round ball, approximately 1 to 2 minutes.
Turn the dough seam side down in a lightly greased large mixing bowl. Cover tightly and let it proof until the size increases almost by half, approximately 1.5 to 2 hours.
Press down the dough and deflate. Transfer the dough to a lightly floured surface.
Divide the dough into 12 equal pieces (approximately 2.3 to 2.5 oz each).
Work with one piece of dough at a time. Cover the rest with plastic wrap or a damp towel to prevent them from drying out.
Stretch the dough using your fingers and pinch the edges together at the bottom to form a smooth dough.
Place the dough seam-side down on a clean, dry surface (no extra flour should be added at this point—see notes).
Use your hand to drag the dough in small circles until it is completely round and smooth.
Place the smooth dough seam side down on a baking pan lined with parchment paper at least 1 inch apart from each other.
Cover loosely with plastic wrap and let them rise until they increase by half, approximately 1.5 to 2 hours.