1. Preheat your oven to 400°F and line a baking sheet with parchment paper.

2. In a medium saucepan, heat the water, butter, and salt over medium until the butter melts and the mixture begins to simmer.

3. Add the flour all at once and stir vigorously until a smooth dough forms and pulls away from the pan, about 1-2 minutes.

4. Remove from heat and let the dough cool for 2-3 minutes, then beat in the eggs one at a time until glossy and smooth.

5. Stir in the Parmesan and black pepper until fully incorporated.

6. Scoop or pipe small mounds (about 1 tbsp each) onto the baking sheet, spacing slightly apart.

7. Bake 20-22 minutes, or until puffed and lightly golden.