Instructions:

In a medium saucepan, combine water and butter. Heat over medium heat until the butter melts.
Add salt and flour, and stir with a spoon until the mixture forms a dough.
Add vanilla extract to the dough. Crack in the 3 eggs, one at a time, while mixing with a hand mixer until fully incorporated.
Transfer the dough to a piping bag and pipe out 12 circles on a parchment-lined baking sheet.
Heat oil in a pan and fry each donut for 3-4 minutes, turning until golden brown on both sides.
Remove from oil, let them drain on paper towels, and enjoy!