Plan and pan-sear frozen Alaska cod with orzo and tomatoes

What this method gives you and when to use it

This method takes Alaska cod fillets straight from the freezer to a skillet, with no thawing. The fish gets an uncovered sear and then finishes under a lid. It is served with lemon-parsley orzo and cherry tomatoes blistered in the same pan. It suits a weeknight dinner for four when the fish is still frozen at the time you start cooking. The method comes from a recipe published by Alaska Seafood, and the timings below belong to that setup: frozen Alaska cod fillets of 4 to 6 ounces each in a large pan. For a different species, thawed fish, or much thicker portions, follow a recipe written for that situation rather than stretching these times.

How long to cook frozen cod in a pan

Plan on two stages. First, sear uncovered over medium-high heat for about 3 to 4 minutes. Then turn the fillets, cover the pan, and cook over medium for about 5 to 6 minutes more. That adds up to roughly 8 to 10 minutes of pan time. The recipe says the second stage depends on fillet thickness and doneness, but it gives no formula for converting thickness into minutes. Treat the covered interval as a starting estimate and use the doneness checks below to decide when the fish is ready.

Ingredients for four servings

• 4 frozen Alaska cod fillets, 4 to 6 ounces each
• 1⅓ cups dry orzo
• ¼ cup chopped parsley
• 1 tablespoon lemon juice
• 1 teaspoon lemon zest
• 1 pint cherry tomatoes
• Lemon wedges for serving
• 2 tablespoons plus 2 teaspoons oil in total
• 1¼ teaspoons salt in total

Here is how the oil and salt are divided. The orzo takes 1 teaspoon of oil and ½ teaspoon of salt. The tomatoes take 1 tablespoon of oil. The fish takes the remaining ¾ teaspoon of salt and the remaining 1 tablespoon plus 1 teaspoon of oil, which is used to coat the fillets and to drizzle over them at the end. The recipe does not say how to split that remaining oil between coating and finishing.

Equipment

• A large heavy-bottomed or nonstick skillet that holds four fillets
• A lid that fits the skillet
• A pot for the orzo
• A spatula for turning the fish
• An instant-read food thermometer

Order of work

• 1. Cook the orzo according to the package directions and drain it. Toss it with the parsley, lemon juice, zest, 1 teaspoon of oil and ½ teaspoon of salt. Set it aside.
• 2. Get the lemon wedges and serving plates ready so nothing holds you up once the fish is done.
• 3. Rinse the frozen fillets under cold running water to remove the ice glaze. Pat them dry and coat both sides with oil.
• 4. Heat the skillet over medium-high. Lay in the fillets and cook uncovered for about 3 to 4 minutes.
• 5. Turn the fillets and season them with the remaining salt. Cover the pan, lower the heat to medium, and cook for about 5 to 6 minutes. Thicker pieces will need the longer end of that range.
• 6. Check doneness (see below). If the fish isn't done, cover it again and keep cooking, checking often.
• 7. Move the fish to plates and finish it with a little oil and a squeeze of lemon.
• 8. Carefully wipe out the hot skillet. Add 1 tablespoon of oil and the cherry tomatoes and cook over high heat for about 2 to 3 minutes, shaking the pan now and then, until the skins blister.
• 9. Plate the cod with the orzo and tomatoes, and serve with lemon wedges.

How to tell when the cod is done, and food safety

Federal food safety guidance lists 145°F (63°C) as the safe minimum internal temperature for fish fillets, including cod, and recommends checking it with a food thermometer. Insert the probe into the thickest part of a fillet. The same guidance gives visual cues as well: the flesh turns opaque rather than translucent, and it separates easily when pressed with a fork. If the center is still glossy or translucent, or reads below 145°F, put the lid back on and keep cooking over medium. Recheck at short intervals instead of adding a large block of time at once.

Take care when wiping out the skillet between the fish and the tomatoes. It will be very hot. Use a folded towel or paper towels held with tongs rather than your bare hand.

When your setup differs from the recipe

Several changes can make the recipe's minutes unreliable: a smaller pan, a pan of different construction, cooking more than four fillets, or fillets noticeably thicker than typical 4- to 6-ounce portions. The source gives no numeric adjustment for any of these. Use the stated times only as a first checkpoint, and let the thermometer and the opaque, flaking flesh decide when the fish is done. If the fillets won't fit in a single layer without crowding, cooking in batches keeps you closer to the conditions the recipe was written for.

An example planning record

Writing down a few details the first time you make this helps you repeat what worked. The entries below are an illustration, not measurements from a real cook.

Item	Example entry
Species and starting state	Alaska cod, frozen
Portion weight	About 5 oz each
Thickness	Measured with a ruler at the thickest point
Coating	Oil only
Pan and lid	12-inch nonstick skillet with a fitted lid
Burner settings	Medium-high uncovered, then medium covered
Turning point	After about 4 minutes
Endpoint check	Thermometer reading in the thickest fillet; opaque and flakes with a fork
Covered minutes actually needed	Recorded after cooking