Spring onion and prawn empanadas

Seafood
Portuguese
Spring onion and prawn empanadas
Spring Onions1 bunch
Olive OilDash
Red Chilli1 finely sliced
Garlic1 clove
Prawns350g
Feta75g
Butter15g
Plain Flour250g
Egg1 Seperated
White Wine Vinegar1/2 tsp