In a heavy saucepan, melt the butter in the milk and bring to a boil. Add the salt. Add the flour all at once and cook until it comes to a ball and coats the bottom of the pot. transfer into a stand mixer and put on low. Once the steam stops add each egg one at a time until each egg is completely incorporated. When it looks like a batter add the rosemary, chives and cheese. Mix until incorporated. With a small ice cream scoop, put it on a sheet tray lined with parchment paper. Bake in a preheated 400° F for 20-25 minutes. Enjoy with a glass of wine. Bon Appetit.