Lentils are the body of this bowl, and everything else is there to keep them company.
That is worth saying up front, because most salads with sweet potato in the title are just orange cubes in dressing.
This one is roughly half lentils by volume.
French green lentils, the small slate colored ones that hold their shape and stay separate instead of dissolving.
Roasted sweet potato goes in for sweetness and weight, cucumber for cold snap, and a lemon and olive oil dressing pulls it all together.
Parsley and mint by the handful. Feta if you want it.
I cooked lentils badly for a long time.
My early bowls came out as a grey paste, because I bought whatever bag said lentils and simmered them until they were definitely done.
Red lentils, it turns out, are engineered to collapse. That is why they make good soup and terrible salad.
Once I switched to French green and started tasting them at twenty minutes instead of thirty, the whole dish clicked.
Serve it chilled or at room temperature, never warm.
And make it the day before if you can.
The lentils sit in the lemon overnight and come out tasting like somebody seasoned every single one by hand.
It is my favorite thing to have waiting in the fridge on a Monday!
Lentils Are the Body of This Salad
Choosing the wrong lentil is the only way to truly ruin this recipe. Everything else is forgiving. This is not.
Lentils fall into two camps, the ones that hold their shape and the ones that fall apart on purpose.
Use these:
- French green lentils (lentilles du Puy). Small, dark slate green with a mottled look. They keep a firm skin and a distinct bite even when fully cooked. My first choice every time.
- Black beluga lentils. Tiny, glossy, and they hold shape just as well. They tint the dressing slightly grey, which bothers some people and not me.
- Standard brown lentils. Widely available and perfectly good if you pull them off the heat early. Start tasting at 18 minutes.
Never these:
- Red or yellow lentils. These are split and have no skin, so they break down into a puree within minutes. They are built for dal and soup.
- Any lentil labeled split. Same problem, same result.
Can you use canned? You can. Drain them, rinse them well, and handle them gently because they are already soft. Two 15 ounce cans replaces the cooked lentils here.
Cook the Lentils So They Stay Whole
Two rules and the mush problem goes away for good. Salt the water, and cool them completely before anything wet touches them.
Start the lentils in cold water with salt and a bay leaf.
Bring it up to a bare simmer, the kind where a bubble breaks the surface every second or so.
A rolling boil knocks the lentils against each other and the skins split.
Start tasting at 20 minutes. You are looking for tender with a slight resistance at the center, the way you would judge pasta.
Drain them the moment they get there.
Pro tip: Spread the drained lentils on a sheet pan in a thin layer to cool. In a bowl they keep cooking in their own heat and go soft. On a pan they are room temperature in about 15 minutes.
Warm lentils plus dressing equals mush. The acid softens them further and the residual heat finishes the job.
Wait for them to cool. It is the difference between a salad and a spread.
Roasting the Sweet Potato
Small cubes, hot oven, room on the pan. Sweet potato is the counterweight here, not the main event, so it should stay in distinct pieces.
Cut them into ½ inch cubes, smaller than you would for a side dish, so they sit in balance with the lentils on a fork.
Roast at 425°F for 22 to 26 minutes.
Spread them out. Crowded cubes steam and go soft, and soft cubes break up in the folding.
The seasoning is what keeps this dish in the Mediterranean lane instead of drifting toward Tex-Mex.
Cumin and coriander, not chili powder and not smoked paprika. Cumin brings warmth, coriander brings a faint citrus note that meets the lemon dressing halfway.
Cool them on the pan before they go in the bowl, same as the lentils.
The Lemon and Olive Oil Dressing
Six ingredients, one bowl, thirty seconds. I build this while the lentils simmer.
The ratio is roughly 2 parts olive oil to 1 part lemon juice, which is sharper than a standard vinaigrette on purpose.
Lentils are starchy and they soak up acid the way rice soaks up stock.
A dressing that tastes correct in the bowl will taste flat once it is in the salad, so make it a touch too bright.
- Fresh lemon juice only. The bottled kind tastes tinny and there is nowhere for it to hide in a dressing this simple.
- Zest as well as juice. The zest carries the oils, which is where most of the lemon flavor actually lives.
- Grate the garlic. A microplane turns it into paste that disappears into the oil. Minced garlic stays in gritty little pieces.
- Dried oregano, not fresh. This is one of the rare cases where dried is better. It is more concentrated and it is the flavor people associate with Greek salads.
Why lemon and not vinegar? Vinegar would be fine, and plenty of lentil salads use red wine vinegar. Lemon is softer and rounder, and it reads distinctly Mediterranean next to the cumin.
Ingredients You'll Need
Four short groups, and most of it is pantry. The lentils, the sweet potato, the fresh things, and the dressing.
For the lentils:
- French green lentils (1 ¼ cups). Puy or plain brown. Rinsed under cold water first, and picked over for the odd small stone.
- Water (3 ½ cups) and kosher salt (1 teaspoon). Salted cooking water seasons the lentils from the inside.
- Bay leaf (1). Removed before anything else happens. It adds a background savory note you would miss if it were gone.
For the roasted sweet potato:
- Sweet potatoes (1 ½ pounds). Peeled and cut into ½ inch cubes.
- Extra virgin olive oil (2 tablespoons). Enough to coat the cut faces.
- Ground cumin (¾ teaspoon) and ground coriander (½ teaspoon). The pair that sets the direction of the whole salad.
- Kosher salt (½ teaspoon). On the pan before roasting.
For the lemon dressing:
- Extra virgin olive oil (⅓ cup). Use one you would happily taste on bread, because you will taste it here.
- Fresh lemon juice (3 tablespoons) and zest (1 teaspoon). About one large lemon does both.
- Garlic (1 clove, grated). Raw and sharp, softened by the oil.
- Dried oregano (1 teaspoon). Crumbled between your fingers as it goes in.
- Kosher salt (½ teaspoon) and black pepper (¼ teaspoon).
To finish:
- English cucumber (1 cup, diced). The cold, crunchy element. Cut it the same size as the sweet potato cubes.
- Red onion (½ small, finely diced). Raw and sharp. Soak it in cold water for 5 minutes if you want it milder.
- Fresh flat leaf parsley (½ cup, chopped). A real handful, treated as an ingredient rather than a garnish.
- Fresh mint (¼ cup, chopped). Mint is what makes this taste Mediterranean rather than generic.
- Feta (¾ cup, crumbled, optional). Sheep's milk feta in brine if you can find it. Added last so it stays in visible pieces.
- Toasted pumpkin seeds (⅓ cup). The crunch on top. Toast them dry in a skillet for 3 minutes.
Ingredient Notes and Swaps
- Leaving the feta out. The salad works completely without it. Add an extra tablespoon of lemon juice to make up for the missing salt and tang.
- Cucumber swaps. Diced celery or thinly sliced fennel both give you the same cold crunch with a different flavor.
- Herb swaps. Dill in place of mint is excellent. Cilantro works if that is what you have, though it pulls the dish somewhere else.
- Nuts and seeds. Toasted walnuts, almonds or pine nuts all work. Add them at the table so they stay crisp.
- Add a green. Two big handfuls of baby spinach folded in just before serving turns this into a full meal salad.
- Butternut squash. Roasts in about the same time and gives you the same sweetness with a little less starch.
How to Make Mediterranean Lentil and Sweet Potato Salad
The lentils and the sweet potato cook at the same time and then both have to cool. Build the dressing and chop the fresh things while you wait.
Step 1: Simmer the Lentils
Rinse the lentils and put them in a saucepan with the water, salt and bay leaf.
Bring to a boil, then drop to a bare simmer.
Cook 20 to 25 minutes, tasting from 20 minutes, until tender with a slight bite at the center.
Drain, pull out the bay leaf, and spread them on a sheet pan to cool completely.
Step 2: Roast the Sweet Potato
Heat the oven to 425°F.
Toss the cubes with the olive oil, cumin, coriander and salt.
Spread them on a rimmed sheet pan with space between the cubes.
Roast 22 to 26 minutes, until the edges are browned and a cube gives to a knife.
Cool on the pan.
Step 3: Whisk the Dressing
Whisk the olive oil, lemon juice, lemon zest, grated garlic, oregano, salt and pepper together in a small bowl until it thickens slightly.
Taste it. It should be noticeably bright, almost too sharp on its own.
Step 4: Toss and Rest
Put the cooled lentils in a large bowl and pour over about two thirds of the dressing.
Fold in the cooled sweet potato, cucumber, red onion, parsley and mint.
Add the rest of the dressing and fold gently.
Let it rest 20 minutes so the lentils take on the lemon.
Fold in the feta, scatter the pumpkin seeds over the top, and serve.
Serving It Cold or at Room Temperature
Room temperature is where this salad tastes best, and it is not close. Straight from the fridge, the olive oil goes thick and dull and the herbs lose their edge.
Twenty minutes on the counter fixes all of it.
The oil loosens, the lemon comes forward, and the mint smells like mint again.
Cold is still perfectly good if you are eating it out of a container at your desk.
Warm is the one to avoid. Warm lentils go soft in the dressing and the cucumber goes limp beside them.
If you have made it ahead, pull the bowl out while you finish everything else and it will be ready when you are.
Meal Prep and Storage
- Fully dressed salad. Keeps 5 days in a sealed container. It genuinely improves on day two.
- Day three onward. Refresh it with a squeeze of lemon and a fresh handful of chopped parsley. That is all it needs.
- Components separately. Lentils, roasted sweet potato and dressing all keep 5 days apart. Combine the day you serve it for the firmest texture.
- Cucumber and herbs. If you are prepping for the week, hold these back and add them by the portion. They soften faster than the rest.
- Feta. Add at serving. Left in for days it goes soft and salts the whole bowl.
- Do not freeze. The cucumber turns to water and the sweet potato collapses.
Tips for the Best Lentil Salad
- Salt the lentil water. Unsalted lentils taste hollow no matter how good the dressing is. Season them at the source.
- Cool everything first. This is the one rule that separates a good bowl from a mushy one. Sheet pans, not bowls.
- Dress in two stages. Lentils first, on their own, then the rest. They absorb the most and they should get first access.
- Cut everything the same size. Sweet potato and cucumber both at ½ inch means every forkful gets a bit of each.
- Chop the herbs last. Cut parsley and mint start losing aroma within minutes.
- Taste for acid at the very end. After resting, the salad almost always wants one more squeeze of lemon. Check before it goes to the table.
This bowl has become my default Sunday afternoon project.
Give it a try!
Recipe
Mediterranean Lentil and Sweet Potato Salad
Ingredients
For the Lentils
- 1 ¼ cups French green lentils Puy or brown, rinsed
- 3 ½ cups water
- 1 teaspoon kosher salt
- 1 bay leaf
For the Roasted Sweet Potato
- 1 ½ pounds sweet potatoes peeled and cut into ½ inch cubes
- 2 tablespoons extra virgin olive oil
- ¾ teaspoon ground cumin
- ½ teaspoon ground coriander
- ½ teaspoon kosher salt
For the Lemon Dressing
- ⅓ cup extra virgin olive oil
- 3 tablespoons fresh lemon juice
- 1 teaspoon lemon zest finely grated
- 1 clove garlic grated
- 1 teaspoon dried oregano
- ½ teaspoon kosher salt
- ¼ teaspoon black pepper
To Finish
- 1 cup English cucumber diced ½ inch
- ½ small red onion finely diced
- ½ cup fresh flat leaf parsley chopped
- ¼ cup fresh mint chopped
- ¾ cup feta crumbled, optional
- ⅓ cup pumpkin seeds toasted
Instructions
Cook the Lentils
- Rinse the lentils and put them in a saucepan with the water, salt and bay leaf. Bring to a boil, then reduce to a bare simmer.
- Cook 20 to 25 minutes, tasting from 20 minutes, until tender with a slight bite at the center.
- Drain, discard the bay leaf, and spread the lentils on a sheet pan to cool completely. Do not dress them warm.
Roast the Sweet Potato
- Heat the oven to 425F. Toss the sweet potato cubes with the olive oil, cumin, coriander and salt.
- Spread them on a rimmed sheet pan with space between the cubes and roast 22 to 26 minutes, until the edges are browned and a cube gives to a knife. Cool on the pan.
Make the Dressing
- Whisk the olive oil, lemon juice, lemon zest, grated garlic, dried oregano, salt and pepper together until slightly thickened. It should taste noticeably bright on its own.
Assemble
- Put the cooled lentils in a large bowl and pour over about two thirds of the dressing.
- Fold in the cooled sweet potato, cucumber, red onion, parsley and mint, then add the remaining dressing and fold gently.
- Rest 20 minutes so the lentils absorb the lemon. Fold in the feta, scatter the toasted pumpkin seeds over the top, and serve chilled or at room temperature.
Notes
- Lentil choice: Use French green, black beluga or brown lentils. Red and yellow lentils are split and will break down into puree.
- Cool before dressing: Warm lentils turn to mush once acid hits them. Spread them on a sheet pan to cool fast.
- Canned lentils: Two 15 oz cans, drained and rinsed, replace the cooked lentils. Fold gently, they are already soft.
- Serve at room temperature: Cold olive oil goes thick and dull. Pull the bowl out 20 minutes before serving.
- Storage: Keeps 5 days and improves on day two. Refresh with lemon and fresh parsley from day three.
