Costco Lamb Chops Recipe
I recently picked up a pack of those beautiful Australian lamb chops from Costco, and let me tell you, the result was restaurant-quality. After struggling with inconsistent cooking in the past, I finally found the sweet spot between a crispy sear and a tender, pink center.
This herb-roasted method completely changed how I approach weeknight dinners, making me feel like a gourmet chef without the hassle. The aroma of fresh rosemary and garlic filling my kitchen was just the cherry on top of an incredible meal.

Ingredients Section
To get the best flavor out of your lamb, freshness is key for the aromatic components. Here is what you will need to replicate this delicious dish at home:
- 8 large garlic cloves: Fresh garlic is non-negotiable here for that punchy, aromatic base that penetrates the meat deeply. Do not use the jarred minced stuff; it lacks the necessary bite.
- 1 tablespoon fresh thyme leaves: Use fresh herbs rather than dried because the natural oils release a brighter, more floral flavor during the high-heat roasting process.
- 1 tablespoon fresh rosemary leaves: Gently bruise or crush these leaves with the back of your knife to wake up the piney scent before mixing them into your marinade.
- 2 teaspoons coarse Kosher salt: This specific salt grain adheres better to the meat surface and draws out just enough moisture to create a delicious, savory crust.
- 2 tablespoons Extra Virgin Olive Oil: You will need to split this amount up, using half to create the herb paste and reserving the other half for greasing your hot skillet.
- 8 lamb loin chops: Look for chops that are about 1 and 1/4 inch thick. This thickness is ideal because it allows you to get a good sear without overcooking the inside.
Note: This recipe yields 4 servings with 2 lamb chops per person.
Variations
If you want to switch things up, there are plenty of ways to customize this recipe to suit different dietary needs or flavor preferences.
- Crispy Herb Crust: If you are not strictly avoiding gluten, try mixing Panko breadcrumbs with the herbs and pressing them onto the chops before finishing in the oven. This adds a fantastic crunch.
- Dairy-Free Creaminess: While this recipe is naturally dairy-free, you can serve it with a side of coconut milk-based mashed potatoes or a cashew cream sauce for added richness without the lactose.
- Spicy Kick: Incorporate a teaspoon of red pepper flakes or a dash of cayenne powder into the marinade if you enjoy some heat to cut through the richness of the meat.
- Citrus Brightness: Add the zest of one lemon to the marinade. The acidity helps tenderize the meat further and adds a zesty, fresh dimension that pairs beautifully with rosemary.
- Keto-Friendly: This recipe is already excellent for Keto diets. To boost the fat content, serve with a compound butter made of garlic and herbs to melt over the hot chops.
Cooking Time
Planning your meal is easy with this quick turnaround time:
- Prep Time: 10 minutes
- Cooking Time: 16 minutes
- Total Time: 26 minutes (plus marinating time)
Equipment You Need
Having the right tools on hand will make this process smooth and efficient:
- Digital Meat Thermometer: This is the most crucial tool for ensuring you hit that perfect medium-rare temperature without having to cut into the meat prematurely.
- Cast Iron Skillet: An oven-safe skillet is essential for this method because it retains high heat for searing and transitions safely directly into the hot oven.
- Large Mixing Bowl: You need a bowl large enough to comfortably toss all eight chops in the marinade so they get coated evenly on all sides.
- Kitchen Tongs: Long-handled tongs allow you to flip the meat in the scorching hot pan safely and help you sear the fatty edges without burning your hands.
- Sharp Chef’s Knife: A good knife makes prepping the garlic and herbs quick and safe, ensuring you get a fine mince that melts into the sauce.
How to Make Costco Lamb Chops Recipe
This method relies on a “sear-then-roast” technique that locks in juices and ensures even cooking. It is straightforward and yields professional results.
Prepare the Herb Marinade
Start by grabbing your large mixing bowl and combining the crushed garlic, fresh thyme leaves, rosemary, and Kosher salt. Pour in one tablespoon of the Extra Virgin Olive Oil and stir it all together vigorously until it forms a thick, fragrant paste. Add your lamb chops to the bowl and use your clean hands to massage the mixture all over the meat, ensuring every crevice is coated with herbs.
Let the Meat Rest
Allow the chops to sit in the marinade at room temperature for at least 30 minutes. This step is practically mandatory because it takes the chill off the fridge-cold meat, which ensures it cooks evenly later on. If you have more time to spare, you can leave them to marinate for up to an hour for even deeper flavor penetration and tenderness.
Preheat the Oven
While the lamb is enjoying its marinade bath, turn your oven on to 400 degrees Fahrenheit so it is fully heated when you are ready to roast. A properly heated oven is necessary to finish the cooking process gently but quickly after the intense heat of the sear. Make sure your oven rack is positioned in the center to allow for optimal airflow around the skillet.
Sear the Chops
Heat the remaining tablespoon of olive oil in your heavy, ovenproof skillet over medium-high heat until the oil shimmers and just starts to smoke. Place the chops in the pan, making sure not to crowd them (do it in batches if necessary), and sear for about 3 minutes per side. You are looking for a deep, golden-brown crust to form on the exterior, which adds immense flavor.
Finish in the Oven
Once the chops are beautifully browned on both sides, transfer the entire skillet directly into your preheated oven to finish cooking the inside. Roast the chops for about 10 minutes if you prefer a medium-rare finish, which preserves the meat’s natural tenderness. It is best to check them around the 8-minute mark since oven temperatures can vary.
Check for Doneness
Use your meat thermometer to check the internal temperature before pulling them out of the oven completely. For rare chops, aim for an internal temperature of 115 to 120 degrees F, or 125 degrees F for medium-rare. If you prefer medium, look for 130 to 135 degrees F, while medium-well is around 145 degrees F; keep in mind the temp rises as they rest.

Additional Tips for Making this Recipe Better
I have learned a few tricks over the years to ensure these chops come out perfect every single time:
- I always pat the lamb chops dry with a paper towel before adding them to the marinade; this helps the oil and herbs stick to the meat rather than sliding off.
- I strongly recommend not skipping the resting period after cooking; letting the meat sit on a cutting board for 5 to 10 minutes allows the juices to redistribute so they don’t run out when you cut.
- I find that buying the vacuum-sealed packs from Costco ensures the meat stays fresher longer in the fridge compared to standard butcher paper wrapping.
- I sometimes sear the fat cap (the white strip of fat on the edge) by holding the chops vertically with tongs for 30 seconds; this renders the fat and makes it crispy rather than chewy.
How to Serve Costco Lamb Chops Recipe
Presentation is part of the fun, and these chops look elegant enough for a dinner party but are simple enough for family night.
- Classic Pairing: Serve these alongside roasted fingerling potatoes and steamed asparagus. The earthiness of the potatoes complements the gamey sweetness of the lamb perfectly.
- Fresh and Light: For a lighter summer meal, pair the chops with a Greek salad featuring cucumbers, tomatoes, olives, and feta cheese. The acidity of the dressing cuts through the richness of the lamb.
- Sauce Options: While the chops are flavorful on their own, a side of mint jelly or a homemade yogurt-dill sauce can add a cooling contrast to the savory garlic and rosemary crust.
- Garnishing: Plating is easy; simply stack two chops on a plate, drizzle with a little bit of the pan juices, and top with a fresh sprig of rosemary or thyme for a pop of green color.

Nutritional Information
This dish is high in protein and healthy fats, making it a satiating main course.
- Calories: Approximately 350 kcal per serving
- Protein: High quality, essential for muscle repair
- Carbohydrates: Very low, almost negligible
- Fat: Moderate to high, depending on trimming
Make Ahead and Storage
Knowing how to store your leftovers properly ensures you can enjoy a second delicious meal without waste.
Storing in the Fridge
You can store leftover cooked lamb chops in an airtight container in the refrigerator for up to 3 to 4 days. Make sure they have cooled down completely to room temperature before you seal them up to prevent condensation, which can make the crust soggy.
Freezing Guidelines
If you want to keep them longer, wrap each chop individually in plastic wrap or foil and place them in a heavy-duty freezer-safe bag. They will maintain their best quality for about 2 to 3 months, though the texture may change slightly upon thawing, so they are best used in stews or curries after freezing.
Reheating Instructions
To reheat, place the chops in a low oven at 275 degrees F until they are warmed through, usually about 10 to 15 minutes. Avoid the microwave if possible, as it tends to make the meat rubbery and overcooks the inside quickly, ruining that perfect medium-rare you worked hard to achieve.
Why You’ll Love This Recipe
This recipe has earned a permanent spot in my rotation, and here is why I think it will become a favorite in your home too:
- Incredible Flavor with Minimal Effort: The simple combination of fresh herbs and garlic creates a complex, sophisticated taste profile that feels gourmet but literally takes minutes to prep.
- Cost-Effective Luxury: Buying lamb chops at Costco offers significant savings compared to regular grocery stores or butcher shops, allowing you to enjoy a high-end “date night” meal on a budget.
- Australian Quality: Costco typically stocks Australian lamb, which is pasture-raised and grain-finished, resulting in a milder, less gamey flavor that appeals even to those who are usually skeptical of lamb.
- Reliable Results Every Time: The sear-then-roast method removes the guesswork from cooking meat, giving you a perfectly cooked pink interior and a crispy, flavorful exterior consistently.
- Healthy and Clean Eating: This dish fits into many clean-eating lifestyles, including Paleo, Keto, and Whole30, providing a lean protein source without any processed additives or artificial ingredients.




