FOR THE TUSCAN BURGERS
1 lb -
lean minced beef (ground beef)
¼ -
red onion
10 - 12 -
fresh flat parsley leaves
1½ level tablespoons -
Pecorino Romano
1 -
egg
-
salt and pepper
FOR THE TOPPINGS
4 slices -
Provolone cheese
2 -
lettuce leaves
1 -
ripe avocado
1 -
tomato
4 -
burger buns