Pour water into a saucepan and set on fire, add butter and salt. Bring to a boil and remove from heat.
Pour all the flour and mix well so that there are no lumps.
Add eggs one at a time, mix well after each.
Put the finished dough with a spoon or pastry bag on a baking sheet covered with parchment. Bake in a preheated oven to 200 degrees for about 15-20 minutes. Do not open the oven so that the dough does not settle.
Fill the finished custard balls with any filling.
Zavarnushki according to this recipe always turn out lush and tasty, they are perfect for filling with any filling. You can cut the custard in half without cutting to the end and fill it with any cream sweet or salty. This appetizer is perfect for any festive table. If you have a liquid dough, then add quite a bit of flour, in general this can happen depending on the quality of the flour, butter, as well as the size of the eggs.