Preheat your oven to 400°F (200°C).
Dice the eggplant into small half-inch cubes.
Heat the extra virgin olive oil in a large oven-safe skillet over medium-high heat.
Add the eggplant cubes and sauté for 5-7 minutes until they are softened and lightly browned.
Add the ground lamb to the skillet, breaking it up with a wooden spoon, and cook until it is fully browned.
Stir in the minced garlic, cumin, coriander, cinnamon, sea salt, and black pepper, cooking for 1 minute until fragrant.
Pour in the tomato puree and stir to combine, allowing it to simmer for 2-3 minutes.
In a separate small bowl, whisk together the non-fat Greek yogurt and the egg until the mixture is smooth and well combined.
Spread the yogurt and egg mixture evenly over the top of the lamb and eggplant in the skillet.
Place the skillet in the oven and bake for 15-20 minutes until the creamy topping is set and has turned a light golden brown.