INGREDIENTS
2 tbsp
extra virgin olive oil
1
small onion (, chopped)
2 tbsp
unbleached all-purpose flour
1/2 cup
milk
1/4 cup
spinach cooking liquid
1 tsp
Worcestershire sauce
3/4 tsp
celery salt
3/4 tsp
garlic salt
1/2 tsp
freshly ground black pepper
Kosher salt (, to taste)
3/4 cup
pepperjack cheese
12 oz
frozen chopped spinach (, thawed and drained (with drained liquid reserved))
1/4 cup
pepperjack cheese (, for topping)