Egg and Ham Empanadas with Piquillo Pepper Sauce

small, chopped

chopped

or jarred, drained

or sour cream

to taste

chopped

very cold, finely diced

finely diced leftover baked

large, whisked until light and fluffy, plus 2 beaten with 2 tablespoons water, for egg wash

green and pale green parts halved lengthwise and thinly sliced crosswise

crumbled

prepared, preferably, thawed if frozen

for rolling