01 - Whisk together flour, sugar, and salt in a medium bowl.
02 - In a separate bowl, beat melted butter, egg, water, and vanilla extract if using.
03 - Gradually incorporate wet ingredients into dry mixture, stirring until a smooth, pliable dough forms.
04 - Cover dough and let rest for 10 minutes to hydrate.
05 - On a lightly floured surface, roll dough to approximately 1/8 inch thickness.
06 - Cut dough into 4-inch diameter circles or preferred shapes.
07 - Heat vegetable oil in a deep pan to 350°F (175°C).
08 - Drape each dough circle over a metal mold or form, then fry for 1 to 2 minutes per side until golden and crisp.
09 - Remove shells with a slotted spoon, drain on paper towels, and cool completely before filling.