How do you open oysters safely?
Use an oyster knife with a short, sturdy blade. Hold the oyster flat-side up in a folded towel, insert the knife into the hinge, twist gently to pop the shell, then slide the blade under the oyster to sever the muscle. Keep the oyster level to preserve the brine.
Can you make the spinach topping ahead of time?
Yes. Prepare the spinach and bacon sauce up to 4 hours ahead, store it covered in the refrigerator, then spoon onto oysters and broil just before serving for best texture.
What temperature should the broiler be and how long do oysters cook?
Preheat your broiler to high. Broil oysters 4–5 inches from the heat for 3–5 minutes, until the topping is golden and the edges bubble. Watch closely to avoid overcooking the oyster meat.
Can you substitute the Asiago cheese?
Yes. Parmesan, Gruyère, or Pecorino Romano work well and deliver similar richness and browning under the broiler.
How many oysters should you serve per person?
Plan for 3–4 oysters per person as an appetizer, or 6–8 if serving as a main course. This recipe yields 12 oysters.