Roasted Sweet Potatoes with Tahini and Crispy Chickpeas

This recipe for roasted sweet potatoes with tahini, pomegranate, dukkah and crispy chickpeas has been a longtime crowd pleaser. It began as the cheapest dinner I knew how to make. Some 15 years and a much better kitchen later, it is still the first platter to empty, which tells you how irresistible people find it.

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The apartment I lived in that year sat above a laundromat. The floors stayed warm all day from the dryers below, which was the only good thing about the place, because the radiators barely worked and the windows let in every draft.

I had moved in during December with two suitcases and a cast iron pan. I knew nobody on the street. The corner market sold sweet potatoes by the crate for almost nothing, so I bought them by the crate, and for a while that was most of what I ate.

The old range in that kitchen ran hot on the left side and cool on the right. I learned to turn the trays halfway through, a habit I still keep. On Sunday evenings the whole building smelled like laundry soap and caramelizing sugar at the same time, which sounds unpleasant and somehow was not. I would sit on the floor by the warm door of the range because it was the coziest spot in the apartment, and wait for the edges of the potatoes to go dark and sticky.

There was a potluck in the building on the last Sunday of every month, and I avoided it for two months because I could not afford to contribute anything. In the third month, I went anyway with a tray, mostly because I had bought too many sweet potatoes again and did not want them to spoil. Everyone else brought a pot of something, so nobody owed anybody. My tray came home empty. That was the first time anyone in that city asked me for a recipe.

Sweet potatoes were what made it possible. They cost almost nothing, they filled people up, and once I started piling things on top of them, nobody noticed that my contribution was mostly one cheap root vegetable. Tahini came first because I always had a jar. Then chickpeas, because a can costs less than a coffee. Then pomegranate, because a woman at the market gave me one for free and I did not know what else to do with it. The dish grew by accident, one small addition at a time, until it turned into the thing people asked me to bring.

That winter taught me to build meals around sweet potatoes rather than treat them as an afterthought, and I have been doing it ever since. It led straight to my Sweet Potato and Red Lentil Burgers, which stemmed from the same habit of stretching one cheap ingredient to feed a crowd.

It also gave me my Middle Eastern Caramelized Sweet Potato Slices With Date Syrup, in which the sugars turn dark and sticky under high heat. And when I want the same sweet and nutty pairing in a simpler form, I make my Maple Tahini Sweet Potatoes, which is the closest relative to this recipe and takes half the effort.

This one, though, is the full table. It is the recipe I still reach for when I want a side dish that looks like it took real work and honestly did not. My kitchen is bigger now and the radiators function.

Leo and Lin argue over the pomegranate seeds before the platter reaches the table, and F. always eats the chickpeas off the tray when he thinks I am not looking. Some things about that winter I would not repeat. The sight of a hot tray coming out at six in the evening still makes me feel like company is on the way.

Ingredients

Sweet potatoes are the whole reason this recipe works. I use a mix of the regular orange kind and the purple or white ones, cut into planks rather than cubes, because the flat sides sit against the hot metal and go properly caramelized. Over the years I have learned not to peel them. The skin holds the plank together and gives you something to bite through. If you can only find the orange kind, the dish tastes exactly as good, though you lose the streaks of purple that add color across the platter.

Tahini is what turns a tray of plain vegetables into a meal. I buy the runny sort that pours easily from the jar, because thick, stiff paste fights you when you try to loosen it with water. The lesson I wish someone had told me sooner is that tahini seizes up the second you add lemon juice, and that this is normal and not a sign you have ruined anything. Keep working in warm water and it comes back smooth. Cashew butter thinned with a little sesame oil will do if you cannot eat sesame paste, though the result tastes sweeter and less savory.

Pomegranate molasses is the ingredient people cannot identify and cannot stop eating. It is sour and dark and a little sweet, and it cuts through the tahini so the plate never feels heavy. I keep a bottle at the back of the cupboard the way other people keep vinegar. That free pomegranate from the market years ago is the reason I started buying it at all. Honey loosened with a squeeze of lemon gets you somewhere close in a pinch, though it lands sweeter and misses the sour edge that keeps the balance here.

Dukkah brings the crunch and carries a real piece of the region's cuisine. This spice blend of nuts, sesame and warm seasoning is the difference between a nice plate and one people talk about for weeks. I sprinkle it on at the last moment, because it goes soft and loses its texture if it sits in the tahini dressing. If you cannot find dukkah, chopped pistachios with cumin and coriander get you most of the way there.

See the recipe card for the full list and exact quantities.

How to Make Roasted Sweet Potatoes with Tahini

This dish comes together in layers, and the order matters more than the timing. The goal is sweet potatoes that turn soft in the middle while the cut sides go dark and sticky, with everything cold, sharp or nutty added at the very end. Give yourself about 45 minutes and one clear counter. Here's how to make Roasted Sweet Potatoes with Tahini:

Heat the Oven and Line Your Trays

• Preheat the oven to 200°C (400°F) and line two large baking sheets plus one small sheet with foil.
  • The foil is not only for washing up, but it also helps the sugars caramelize instead of sticking.
• Let everything come fully up to heat before anything goes in,.
  • A cool oven steams the planks rather than browning them.

Bake the Chickpeas First

• Spread them on the small tray and bake for 25 to 30 minutes.
  • Shake the pan halfway through, until they are golden and rattle when you move them.
  • Set them aside uncovered, because a lid or a bowl traps steam and softens them within 20 minutes.

Cut the Sweet Potatoes into Planks

• Try to keep the thickness even.
  • A thin plank next to a thick wedge means one burns while the other stays raw.
  • Cutting them lengthwise gives you the most surface for browning.

Season the Planks

• If you want it, you can also mix in the optional smoked paprika.
• Use your hands rather than a spatula so the seasoning coats every piece evenly.
  • Arrange them cut side down across the two trays in a single layer, with a little space between each one.

Roast Until the Edges Go Dark

Roast for 35 to 40 minutes, turning the trays and stirring the planks around at the halfway mark. You are looking for deep golden cut sides and edges that have started to crisp, not only softness. Push a fork into the thickest piece to check, and if the tray from the cooler side of your range lags behind, give it another 10 minutes on its own.

Make the Tahini Dressing

• It will seize into a thick paste almost immediately, which is exactly what should happen.
• Add the minced cloves, then pour in warm water a tablespoon at a time.
  • Do so until the tahini sauce runs off the spoon in a thick, creamy ribbon.
• Season with salt and a little pepper, then stir in the last tablespoon of lemon juice.

Fry the Sage in Oil

• Count to 30 before pulling everything off the burner.
• Pour that spicy, garlicky oil straight over the fried leaves.

Serve

Transfer the sweet potatoes to a wide serving platter while they are still hot. Keep them in a loose layer rather than piling them. Drizzle generously with the tahini sauce, then spoon over the crispy herbs, garlic, and all of the fragrant oil.

Scatter the pomegranate seeds, crispy chickpeas, and pistachios across the top. Sprinkle with dukkah and toasted sesame seeds. Finish with pomegranate molasses, lemon zest, fleur de sel, and fresh parsley and mint.

Every bite should have a little of everything, so don't be afraid to spread the toppings evenly before serving.

Storage

Store leftover sweet potatoes in an airtight container in the fridge for up to four days, keeping the chickpeas separate at room temperature so they stay crispy. The tahini dressing keeps for up to a week in the fridge. If it thickens, whisk in a little warm water and a pinch of salt before serving.

To reheat, spread the potatoes on a foil-lined baking sheet and warm them in a hot oven for 10 to 15 minutes instead of the microwave. They are also delicious cold, chopped into a salad with tomato and grated carrot, or served alongside roast chicken the next day. This is one of those tasty side dishes that works just as well for lunch as it does at dinner.

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