These lamb burgers combine ground lamb with oregano, garlic, and red onion, then get topped with homemade tzatziki and crumbled feta. The patties cook fast on a grill or cast iron, and the tzatziki can be made a day ahead — which makes this a genuinely low-stress option when you’re feeding a group. If you’ve only ever done beef burgers at a cookout, lamb is worth the switch.
The short version of why this works
Two things matter here. First, lamb has enough fat to stay juicy over high heat without any filler — but only if you don’t overwork the mix. Combine the ingredients until just incorporated, then stop. Second, the tzatziki needs time to rest. The cucumber releases water as it sits, and the garlic mellows. Make it at least an hour before you grill, ideally the night before. Fresh tzatziki tastes sharp and watery; rested tzatziki tastes like it belongs on the burger.
Mistakes to avoid
- Packing the patties too tight. Dense patties shrink unevenly and turn rubbery. Press them loosely, make a small thumbprint indent in the center, and they’ll stay flat on the grill.
- Skipping the cucumber squeeze. Grated cucumber holds a surprising amount of water. Wring it in a clean towel before adding it to the tzatziki or the sauce will be thin and slide right off the bun.
- Using low-fat lamb. Extra-lean ground lamb dries out fast. Look for an 80/20 blend — the same fat ratio you’d want in a beef burger. Skip the egg in the mix too; it makes the patty mushy and the lamb doesn’t need a binder.
- Adding feta inside the patty. Feta melts unevenly and can cause hot spots that make the patty fall apart on the grill. Keep it as a topping only.
- Grilling cold patties. Straight-from-the-fridge patties cook unevenly — charred outside, still cold in the middle. Let them sit at room temperature for 15–20 minutes before they hit the heat, especially important when you’re cooking a large batch and grill space is limited.
Make-ahead notes
The tzatziki keeps well in the fridge for up to 3 days in a sealed container — stir before serving since some liquid will separate. Formed raw patties can be refrigerated on a parchment-lined tray, covered, for up to 24 hours, or frozen with parchment between each patty for up to 2 months; thaw overnight in the fridge before grilling. Cooked patties reheat reasonably well in a covered skillet over medium-low heat with a splash of water, though they’re best fresh off the grill. If you’re cooking for a crowd, the tzatziki and formed patties can both be fully prepped the day before, which means the day of your cookout is just fire and assembly.
Greek-Inspired Lamb Burgers with Tzatziki and Feta
Ingredients
For the Burger Patties:
- 1 lb ground lamb preferably grass-fed for best flavor
- ¼ cup red onion finely diced
- 2 cloves garlic minced
- 1 tbsp fresh oregano chopped, or 1 tsp dried
- 1 tsp kosher salt
- ½ tsp freshly ground black pepper
For the Tzatziki Sauce:
- 1 cup Greek yogurt full-fat for creaminess
- ½ cup cucumber grated and squeezed to remove excess water
- 1 clove garlic minced finely into a paste
- 1 tbsp extra-virgin olive oil
- 1 tsp lemon juice freshly squeezed
- ½ tsp salt to taste
For Assembly:
- 4 whole brioche or pita buns lightly toasted
- ¼ cup feta cheese crumbled
- 1 cup baby arugula or spinach
- 1 medium tomato sliced
Instructions
- Make the Burger Patties: In a large bowl, combine ground lamb, red onion, garlic, oregano, salt, and pepper. Mix gently with hands until just incorporated—do not overmix. Form into four equal-sized patties slightly larger than your buns, as they will shrink when cooking.
- Prepare the Tzatziki: In a medium bowl, mix yogurt, grated cucumber, garlic, olive oil, lemon juice, and salt. Taste and adjust seasoning. Cover and refrigerate for at least 10 minutes to allow flavors to meld.
- Grill the Burgers: Preheat a grill or cast iron skillet to medium-high heat (about 400°F / 200°C). Lightly oil the grill grates. Grill the patties for 4–5 minutes per side, or until the internal temperature reaches 160°F (71°C) for medium doneness. Let rest for 3 minutes after grilling.
- Assemble the Burgers: Toast the buns lightly. Spread tzatziki on the bottom half of each bun, add the lamb patty, top with crumbled feta, arugula, and a slice of tomato. Add the top bun and serve warm.
Notes
- For a leaner option, ground turkey or beef can be substituted for lamb.
- Tzatziki can be made up to 2 days in advance for even deeper flavor.
- For a low-carb version, serve the patty wrapped in lettuce or in a grilled portobello cap.
- Add a few Kalamata olives on top for more authentic flavor.
Nutrition
Common questions
What internal temperature should lamb burgers reach?
Ground lamb burgers should be cooked to 160°F (71°C) internal temperature — the same as any ground meat patty. Use an instant-read thermometer; color alone isn’t a reliable indicator with lamb since it can look done on the outside while still being undercooked inside.
Can I use a cast iron skillet instead of a grill?
Yes, cast iron works well and gives you a good sear. Get the pan hot before the patties go in, and don’t move them for the first 2–3 minutes so a crust forms — lamb patties stick to a pan that isn’t hot enough.
Can I substitute beef or a beef-lamb blend?
A 50/50 beef-lamb blend works and is milder if you’re cooking for people who find straight lamb too strong. Pure beef will work but loses some of the flavor contrast with the feta and tzatziki that makes this burger distinct.
How do I keep the patties from falling apart on the grill?
Don’t overwork the meat when mixing, keep the patties cold until just before grilling, and make sure your grill grates are clean and well-oiled. Lamb patties are more fragile than beef — flip them only once and use a wide spatula.
Can I make the tzatziki with store-bought cucumber dip instead?
You can, but most store-bought versions are thinner and less garlicky than homemade. If you go that route, taste it first and add a little extra lemon juice and minced garlic to sharpen it up before spreading.
What bun holds up best when I’m serving a lot of people?
Brioche buns are the recipe’s recommendation, but they compress and get soggy fast if assembled too early. For a cookout, toast the buns cut-side down on the grill for 60 seconds right before serving, and keep the tzatziki on the side so guests can sauce their own — that way nothing goes soft while people are still getting in line.
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