Spread the lamb out on a clean work surface. Drizzle with olive oil and season with salt and pepper. Rub it into the meat with your fingers to coat it.
Place the cherry tomatoes, baby spinach and feta cheese on the lamb. Fold the outer edges inward a little and then begin rolling the lamb all the way to the end.
When you have created a nice, tight roll, tie it securely with kitchen twine. Wrap it in parchment paper and then aluminum foil. Roast for 2–2 ½ hours.
When ready, remove from the oven, remove the wrappings, cut into slices, and serve.
Notes
Chef’s tip: You can add sun dried tomatoes instead of cherry tomatoes and regular spinach instead of baby spinach.