Keto Lamb Skewers with Tzatziki
These keto lamb skewers use cubes from lamb top round (lamb loin), marinated in olive oil, garlic and oregano and seared briefly in a grill pan. They come with a classic garlic tzatziki made from Greek yogurt, and one serving delivers 44 g protein and 48 g fat at 4 g net carbs in 30 minutes.
The key facts at a glance
- Preparation time: approx. 30 minutes, 5 minutes prep, 30 minutes marinade (passive), 8 minutes pan.
- Approx. 4 g net carbs and 48 g fat per serving.
- Ingredients: lamb top round, olive oil, garlic, oregano, Greek yogurt (10%), cucumber, lemon.
- Works as a summery keto dinner, for grill nights or as a meal prep component for 2 days.
Ingredients
One serving equals 2 skewers with 100 g of lamb top round each plus approx. 100 g of tzatziki, intended as a main course for one adult.
| Amount | Ingredient | Note | ||
|---|---|---|---|---|
| Lamb top round | cut into 30 g cubes, makes approx. 4 skewers | |||
| cut into 30 g cubes, makes approx. 4 skewers | ||||
| Olive oil (marinade) | approx. 2 tbsp | |||
| approx. 2 tbsp | ||||
| Garlic cloves (marinade) | finely chopped | |||
| finely chopped | ||||
| Dried oregano | approx. 1.5 tsp | |||
| approx. 1.5 tsp | ||||
| Lemon zest | grated zest of 1 organic lemon | |||
| grated zest of 1 organic lemon | ||||
| Greek yogurt (10% fat) | - | |||
| Cucumber (grated, squeezed dry) | approx. 1/3 cucumber | |||
| approx. 1/3 cucumber | ||||
| Garlic clove (tzatziki) | finely grated | |||
| finely grated | ||||
| Olive oil (tzatziki) | approx. 1 tsp | |||
| approx. 1 tsp | ||||
| Salt | split between meat and tzatziki | |||
| split between meat and tzatziki | ||||
| Pepper | to taste | |||
| to taste | ||||
Preparation
-
Marinade
approx. 35 minutes (passive)400 g Lamb top round cut into 30 g cubes, makes approx. 4 skewers 30 ml Olive oil (marinade) approx. 2 tbsp 2 cloves Garlic cloves (marinade) finely chopped 3 g Dried oregano approx. 1.5 tsp 1 g Lemon zest grated zest of 1 organic lemon 1 clove Garlic clove (tzatziki) finely grated 5 ml Olive oil (tzatziki) approx. 1 tsp 1 tsp Salt split between meat and tzatziki 0.5 tsp Pepper to taste Cut the lamb top round (400 g) into 30 g cubes and pat dry. Mix with olive oil (30 ml), garlic (2 cloves), oregano (3 g), lemon zest (1 g), salt (0.5 tsp) and pepper in a bowl and marinate for 30 minutes. Meanwhile soak the wooden skewers in water for 20 minutes.
-
Tzatziki
approx. 10 minutes160 g Greek yogurt (10% fat) 60 g Cucumber (grated, squeezed dry) approx. 1/3 cucumber Finely grate the cucumber (60 g), mix with a pinch of salt and let it sit for 5 minutes. Squeeze it well in a fine sieve. Combine with the yogurt (160 g), grated garlic (1 clove), olive oil (5 ml) and 0.5 tsp salt and let it rest for at least 15 minutes.
-
Thread the skewers
approx. 3 minutesThread the marinated lamb cubes onto the soaked wooden skewers, 5 cubes per skewer (makes approx. 4 skewers). Let any excess marinade drip off briefly so it does not splatter in the pan.
-
Sear and rest
approx. 11 minutesHeat the grill pan to high without extra oil. Lay in the skewers and sear for 2 minutes per side (4 sides = 8 minutes for medium rare, pink inside). Rest on a board for 3 minutes and serve with tzatziki and lemon wedges.
You did it! Enjoy every delicious bite.
Which tips help with keto lamb skewers?
- Soak wooden skewers in water for 20 minutes so they do not burn in the pan.
- Salt the meat 30 minutes before searing, it draws out water and creates a crisp crust.
- Use cubes of 25 to 30 g, all the same size, otherwise they cook unevenly.
- Let the pan get smoking hot before laying in the skewers, otherwise no sear flavor.
- Mix the tzatziki early and let it rest for 15 minutes so the garlic and cucumber flavors open up.
Why these skewers work well on keto
Lamb top round (lamb loin) delivers about 22 g protein and 18 g fat per 100 g of raw meat, a high quality protein source with a fat ratio that is ideal for keto. 200 g of lamb top round per serving adds up to around 40 g protein and 32 g fat from the meat alone. The olive oil marinade (15 ml of oil clinging to the meat) contributes another 13 g fat with no carbs. Greek yogurt at 10% fat (80 g in the tzatziki) provides 4 g protein, 8 g fat and approx. 3 g net carbs. Cucumber is very keto friendly at approx. 2 g net carbs per 100 g; 60 g of cucumber in the tzatziki adds about 1 g net carbs. In total the serving lands at approx. 4 g net carbs, 48 g fat and 44 g protein at around 680 kcal.
Source: USDA FoodData Central, Lamb, loin, raw , Harvard T.H. Chan, The Nutrition Source: Healthy Fats
A marinade without sugar or honey
Classic lamb marinades often contain honey (about 17 g sugar in 20 g honey). The keto recipe leaves it out without a replacement, the flavor comes from olive oil, garlic, oregano and lemon zest (not juice, otherwise the protein denatures). By dry salting 30 minutes ahead, the marinade produces a crisp crust without adding any carbs.
Which yogurt works for tzatziki on keto?
Greek yogurt with 10% fat (also called 'straggisto') has about 3.6 g carbs per 100 g, so only 2.9 g for the 80 g used in the tzatziki. Low fat yogurt would be slightly lower in carbs but provides almost no fat, which makes full fat yogurt the better choice on keto. Skyr is an alternative but has less fat (around 0.2%) and a firmer texture.
How do I serve and vary the lamb skewers?
Arrange the skewers on a wooden board with a generous portion of tzatziki and lemon wedges. A Greek salad without bread pairs well. From my own experience, 25 to 30 g per cube is the ideal size, smaller cubes dry out and larger ones do not cook through.
Meal prep: ahead of time and reheating
Marinated raw skewers keep for 24 hours in the fridge, store the tzatziki separately (keeps for 3 days). Cooked skewers are best cold on a salad bowl; to serve warm, sear them briefly in a pan, not in the microwave (turns tough). For meal prep, cook the skewers just to medium rare so they do not dry out when reheated.
If you do not have a grill pan
A regular cast iron or stainless steel pan works just as well, the key is that it gets hot enough (a drop of water dances). In the oven at 220°C under the broiler the skewers cook in about 8 minutes (turn after 4 min). On a charcoal grill, 2 minutes per side without the lid, otherwise they steam.
Nutrition values
| Nutrient | Per 100 g | Per serving | Keto context |
|---|---|---|---|
| Calories | approx. 245 kcal | approx. 680 kcal | Filling main course; energy from lamb top round, olive oil and full fat yogurt. |
| Filling main course; energy from lamb top round, olive oil and full fat yogurt. | |||
| Fat | approx. 17 g | approx. 48 g | Monounsaturated fats from olive oil, saturated from lamb, a balanced keto profile. |
| Monounsaturated fats from olive oil, saturated from lamb, a balanced keto profile. | |||
| Net carbs | approx. 1.4 g | approx. 4 g | Very low; come from yogurt, cucumber and garlic. |
| Very low; come from yogurt, cucumber and garlic. | |||
| Sugar | approx. 1.1 g | approx. 3 g | Low; exclusively from yogurt and cucumber (natural). |
| Low; exclusively from yogurt and cucumber (natural). | |||
| Protein | approx. 16 g | approx. 44 g | High; covers about 29% of the recommended daily protein for a 75 kg person. |
| High; covers about 29% of the recommended daily protein for a 75 kg person. | |||
| Salt | approx. 0.4 g | approx. 1.2 g | Moderate; the tzatziki adds more salt, so taste only at the end. |
| Moderate; the tzatziki adds more salt, so taste only at the end. | |||
Note: Nutrition values are estimated averages per 100 g and per serving and may vary depending on ingredients, brands, portion size, and preparation. They do not replace individual nutrition or medical advice.
FAQ
Which cut of lamb works best for skewers?
Lamb top round (lamb loin) is the first choice: tender, lean enough to thread but with enough fat for a rich flavor. Leg of lamb also works but is a little leaner and needs extra olive oil in the marinade to avoid drying out. Lamb shoulder is too fatty and sinewy for skewers, it is better suited to braising.
Can I make the tzatziki vegan?
Yes, with unsweetened soy or coconut yogurt. Soy yogurt sits at about 1.5 g carbs per 100 g (very keto friendly), coconut yogurt at about 4 g. Both versions change the taste and texture but work functionally. Use garlic and cucumber as in the original recipe.
How do I keep the lamb skewers from drying out?
Three levers: 1) Use lamb top round instead of leg, it has more intramuscular fat. 2) Get the pan really hot and sear briefly (2 min per side for medium rare), do not cook through. 3) Rest the skewers for 3 minutes after searing so the juices redistribute through the meat.
Do lamb skewers fit a keto weight loss plan?
Yes: 44 g protein keep you full for a long time, while carbs at 4 g stay safely in the ketogenic range. To reduce calories, halve the olive oil marinade to 5 ml and use 3.5% yogurt instead of 10%, the serving then drops to approx. 520 kcal with 42 g protein.