Preheat & Prep:
Preheat your oven to 375°F (190°C). Generously grease a muffin tin — these puffs rise and stick, so coat the cups well.
Make the Dough Base:
In a medium saucepan over medium heat, melt the butter.
Add the milk and bring just to a low boil — do not let it boil over.
Add Flour:
Once boiling, dump in the flour all at once. Stir vigorously with a wooden spoon or spatula until the mixture pulls away from the sides of the pan and forms a dough ball.
Cool Slightly:
Remove the pan from heat and let the dough sit for about 5 minutes — this prevents the eggs from scrambling when added.
Incorporate Eggs:
