Beef, Orange, and Gorgonzola Sandwiches

INGREDIENTS

2 tbsp

cider vinegar

1 1/2 tsp

extravirgin olive oil

1/2 tsp

grated orange rind

1/8 tsp

salt

1/8 tsp

freshly ground black pepper

1 cup

fresh orange sections (about 2 oranges)

Italian or French rolls

2 cups

thinly sliced Basic Grilled Flank Steak (about 8 ounces)

1 cup

bagged prewashed baby spinach

1/4 cup

crumbled Gorgonzola or other blue cheese