INGREDIENTS
1 lb
ground beef
5 oz
fresh baby spinach leaves (chopped)
2 oz
crumbled feta cheese
1/3 cup
chopped sun-dried tomatoes
1
egg
1/2 tsp
salt
4
whole-wheat sandwich buns
1 oz
fresh spinach leaves
1
to mato (sliced)
1
small shallot (sliced)
1/4 cup
tzatziki sauce