In a small sauce pan, combine milk, butter, sugar and salt. Bring mixture to a simmer. Add flour and wisk until full incorporated.
Using a wooden spoon or rubber spatula, stir mixture over medium heat for 8-12 minutes.
Place dough in an electric mixer fitted with a paddle attachment.
Mix at lowest speed until dough cools to 130 degrees. With mixer running on lowest speed, ass one egg at a time, waiting until each egg is fully incorporated before adding the next. Place dough in a pastry bag fitted with pastry tip. Pipe dough onto a parchment covered baking tray in 1 inch wide circles.
Place pan in a 425 degree oven and back for approx. 10 minutes or until golden brown on top.
Prop oven door open and let profiteroles continue to bake at 375 degrees