Swiss Chard Stuffed Flank Steak with Feta and Walnuts

INGREDIENTS

1 1/2 lb

flank steak

1 lb

swiss chard, (about two big bunches)

3 tbsp

oil of choice

4 oz

onion, (diced)

3 cloves

garlic, (sliced)

1 tbsp

lemon juice.

lemon zest from 1 lemon

salt and pepper

4 oz

feta cheese, (crumbled)

2 tbsp

raisins, (snipped or cut in half)

2 oz

walnuts, (toasted and finely chopped)