Step 1Preheat oven to 220°C. Spray an 18cm x 28cm rectangular baking dish with olive oil and line a large baking tray with baking paper.
Step 2Place the eggplant in a single layer on the prepared tray. Spray with olive oil and season with cracked black pepper. Bake for 10 minutes, or until just tender.
Step 3Spray a large non-stick frying pan with olive oil and set over medium heat. Add lamb mince, garlic and oregano; cook, stirring, for 2–3 minutes, or until mince is almost browned. Add the zucchini and potato, and cook for 2–3 minutes, or until the zucchini is softened.
Step 4Spread 1 cup of pasta sauce in the base of prepared dish. Spread over half of the mince mixture and top with half of the eggplant slices. Spread over the remaining meat sauce and a final layer of eggplant. Finish with remaining tomato pasta sauce. Combine feta and grated cheddar; scatter the cheese over the dish. Bake for 10–15 minutes, or until golden. Serve moussaka with steamed broccoli.