Activate the yeast. In the bowl of a stand-up mixer, mix together the milk, yeast, and sugar. Allow it to sit for 5-10 minutes or until nice and frothy.
Add the remaining wet ingredients. Using the dough hook attachment on low speed, mix in the butter, followed by the egg.
Add the dry ingredients. Mix in the flour and salt.
Knead. Continue mixing the dough on low speed for 2-4 minutes or until nice and elastic.
Rise. Lightly grease a large bowl and place the dough inside.Cover with plastic wrap and allow the dough to rise in a warm, dry place for 1-2 hours or until doubled in size.
Prep. Line a baking sheet with parchment paper.
Shape and assemble. Cut the dough into 12 even portions and gently fold each around a mozzarella ball, pinching it closed to form a ball. Arrange the balls in the shape of a Christmas tree on the prepared baking sheets. They should be touching, tightly hugging each other.
Rise. Cover the sheet with plastic wrap and let the rolls rise in a warm, dry place for 45 minutes or until nice and puffy.
Preheat. Preheat the oven to 375°F.
Make the egg wash. Whisk together the egg and the milk.
Bake. Remove the plastic wrap, brush the rolls with the egg wash, and sprinkle with oregano. Bake for 20-25 minutes or until beautifully golden brown.
Finish. Sprinkle with pomegranate seeds.
Notes
If you are able to keep them on the large baking sheet they were cooked on then wrap it in foil and store it in the fridge. If not, then place these rolls in an airtight container after they have cooled down to room temperature. Enjoy them the next day or up to 3 days later.