📋 Leftover Easter Lamb Sandwich with Tzatziki and Roasted Peppers

Ingredients

• 1 lb leftover roasted lamb, thinly sliced or pulled into chunks
• 4 large flatbreads or pita breads (about 8–9 inches)
• 1 cup jarred roasted red peppers, drained and sliced into strips
• 2 cups, loosely packed fresh arugula (rocket)
• ½ medium red onion, very thinly sliced
• ½ cup crumbled feta cheese
• 1 tablespoon extra-virgin olive oil
• to taste freshly ground black pepper
• 1 cup full-fat Greek yogurt
• ½ English cucumber (about half a medium cucumber)
• 2 large garlic cloves, finely grated or minced
• 2 tablespoons fresh dill, finely chopped (or 1 tsp dried dill)
• 1 tablespoon fresh lemon juice
• 1 tablespoon extra-virgin olive oil
• ½ teaspoon fine sea salt

Instructions

1. Make the tzatziki first so the flavors have time to meld. Grate the cucumber on the large holes of a box grater directly onto a clean kitchen towel or several layers of paper towel. Gather the towel up and squeeze firmly over the sink, wringing out as much liquid as you possibly can — this step is the secret to thick, creamy tzatziki that doesn't water down. You should remove at least 2–3 tablespoons of liquid.
2. In a medium bowl, combine the squeezed cucumber, Greek yogurt, grated garlic, fresh dill, lemon juice, olive oil, and salt. Stir everything together until well combined. Taste and adjust salt or lemon as needed. Cover and refrigerate while you prepare the rest of the sandwich — even 10 minutes in the fridge helps the garlic mellow and the flavors come together.
3. Slice your leftover lamb as thinly as you can against the grain using a sharp knife — think deli-thin if possible. If your lamb is very cold and firm straight from the fridge, it will actually slice more cleanly. You can serve it cold (which is genuinely delicious and very traditional in Mediterranean-style sandwiches), or if you prefer it warm, heat a drizzle of olive oil in a non-stick skillet over medium-high heat and sauté the lamb slices for 60–90 seconds per side just to warm through. Don't overcook — you're just reviving them, not re-roasting.
4. Toast your flatbreads or pitas. The easiest method: hold each one directly over a gas flame for 20–30 seconds per side using tongs until you get a little char and they puff slightly. Alternatively, toast them in a dry skillet over medium-high heat for about 1 minute per side, or under your broiler for 1–2 minutes. You want them warm, slightly crisp on the outside, and still soft enough to fold.
5. Lay your toasted flatbreads open on a clean work surface. Spread a generous, heaping spoonful of tzatziki (about 3–4 tablespoons) across the center of each flatbread, leaving a 1-inch border around the edges.
6. Layer on the fillings in this order for the best structural integrity and flavor distribution: first the arugula (it acts as a barrier that keeps the bread from getting soggy), then the lamb slices laid slightly overlapping, then the roasted red pepper strips, then the red onion slivers, and finally the crumbled feta scattered over the top. Finish with a crack of black pepper and a very light drizzle of olive oil if desired.
7. Fold or roll the flatbread around the fillings. For a flatbread-style wrap, fold the bottom third up first, then fold in the sides and roll forward. For an open-faced pita, simply fold in half like a taco and press gently. Serve immediately, cut in half on the diagonal if you'd like — because a good cross-section is everything.

Tips

• Squeeze the cucumber until you think you've squeezed enough — then squeeze again. Removing maximum moisture is the single most important step for thick, restaurant-quality tzatziki. Watery tzatziki will make soggy bread within minutes.
• Cold lamb slices beautifully. Take your roast out of the fridge and slice it cold — the fat will be firm and the meat holds together far better than when warm. The residual warmth of the toasted flatbread and the room-temperature toppings are enough to take the chill off.
• If your leftover lamb is already heavily seasoned (especially if it had a herby crust or lots of garlic), taste it before adding extra seasoning anywhere — the feta and tzatziki both bring salt, and you want the sandwich balanced, not over-salted.
• Soak your sliced red onion in cold water for 5–10 minutes before using, then drain and pat dry. This takes the raw bite out while keeping the crunch and color — a tiny step that makes a noticeable difference, especially if you're serving this to anyone who finds raw onion overwhelming.
• If you don't have flatbreads, this sandwich works beautifully in a halved ciabatta roll, a toasted baguette, or even stuffed inside a thick pita pocket. The tzatziki travels well too — pack it separately if you're making this for a packed lunch and spread just before eating.

Storage

The assembled sandwich is best eaten immediately, as the flatbread will soften once filled. However, all the components store separately very well: leftover sliced lamb keeps in an airtight container in the refrigerator for up to 3 days; tzatziki keeps covered in the fridge for up to 3 days (give it a stir before using as it may release a little liquid); roasted peppers keep in their jar in the fridge for up to 2 weeks once opened. Store your flatbreads at room temperature in their original packaging or wrapped in foil.

Make Ahead

This is a brilliant make-ahead lunch situation — do all the prep the night before or first thing Monday morning. Make the full batch of tzatziki (it actually gets better as the garlic mellows overnight), slice all the lamb, drain and slice the roasted peppers, and thinly slice the red onion (store in cold water in a small bowl in the fridge). When lunchtime hits, all you need to do is toast the flatbreads and assemble — that's a 3-minute lunch. If you're packing this for work or school, wrap the flatbread separately from the fillings and pack the tzatziki in a small container on the side to prevent sogginess.