Sweet Potato Lentil Salad with Tahini-Honey Dressing

Watch the Full Step-by-Step
- Large bowl
- Chef's knife
INGREDIENTS
- 2 medium sweet potatoes, cubed
- 1 medium leek, sliced into rounds
- 1 head romaine lettuce, chopped
- 2 cups arugula leaves
- ½ cup cooked black lentils
- ½ cup black olives
- 3.5 ounces/100 grams feta cheese, crumbled
- ¼ cup pumpkin seeds
- Dressing:
- ¼ cup tahini
- ½ teaspoon mustard
- 2 tablespoons honey
- ½ teaspoon salt
- 3 garlic cloves, crushed (about 1 tablespoon)
- 2 tablespoons lemon juice
- 1 tablespoon olive oil
- ¼ cup water
INSTRUCTIONS
- Heat oven to 350°F/180°C.
- Toss the sweet potatoes with olive oil and salt, then spread on a parchment-lined sheet pan with the leek. Roast until tender and lightly caramelized, about 30 minutes.
- Arrange the romaine, arugula, lentils, roasted vegetables, and olives on a serving platter.
- Whisk the tahini, mustard, honey, garlic, salt, lemon juice, olive oil, and water until smooth and pourable. Adjust with more water as needed.
- Drizzle the dressing over the salad, then finish with feta and pumpkin seeds. Serve immediately.

FAQ
What is the best way to meal prep sweet potato lentil salad for the week?
Sweet potato lentil salad is well suited for meal prep because many of its components hold up well when stored separately. The most effective approach is to roast the sweet potatoes and leeks in advance, then cool them completely before refrigerating in an airtight container. The lentils can also be cooked up to several days ahead and stored separately to maintain their texture.
The dressing should always be kept in its own container and only added right before serving to avoid sogginess. When properly stored, a prepared sweet potato lentil salad base will stay fresh for about 3 to 4 days in the refrigerator. For best texture, assemble portions just before eating so the greens remain crisp and the roasted vegetables retain their structure rather than absorbing excess moisture.

Can you substitute ingredients in this salad without changing the flavor too much?
Yes, sweet potato lentil salad is flexible, but substitutions should be chosen carefully to maintain balance between sweetness, acidity, and texture. Sweet potatoes can be replaced with butternut squash or carrots, which still provide natural sweetness and roast well. Leeks can be swapped with red onion or shallots for a sharper flavor profile.
If arugula is unavailable, baby spinach or kale can be used, though kale should be massaged slightly to soften its texture. Black lentils can be substituted with green or brown lentils, but cooking time and firmness may vary. Feta cheese can be replaced with goat cheese or a plant-based alternative.
How long does sweet potato lentil salad last in the refrigerator?
Sweet potato lentil salad can last about 3 to 4 days in the refrigerator when stored properly, but longevity depends on how it is assembled. For best results, store the components separately: roasted vegetables in one container, lentils in another, greens in a dry airtight container, and dressing in a sealed jar.
Once fully assembled with dressing, sweet potato lentil salad is best eaten within 24 hours because the greens begin to wilt and lose texture. If you anticipate leftovers, only dress the portion you plan to eat immediately. Keeping moisture low and preventing premature mixing ensures that the salad maintains its structure, flavor clarity, and overall quality throughout storage.

How can you add extra protein to sweet potato lentil salad?
Sweet potato lentil salad already contains plant-based protein from lentils, but it can easily be enhanced depending on dietary goals. For animal protein, grilled chicken breast, roasted salmon, or seared shrimp pair well with the salad’s sweet and tangy profile without overpowering it.
If keeping it vegetarian, adding a soft-boiled or jammy egg provides richness and additional protein while complementing the tahini dressing. For a vegan upgrade, roasted chickpeas or crispy tofu cubes are strong options, especially when seasoned with smoked paprika, garlic powder, or cumin before roasting. Increasing the portion of lentils slightly also raises protein content without altering the structure of the dish.
Can sweet potato lentil salad be made vegan without losing flavor?
Sweet potato lentil salad can be made fully vegan with minimal impact on flavor if substitutions are done strategically. The primary non-vegan ingredient is feta cheese, which provides saltiness and creaminess. This can be replaced with a plant-based feta alternative or omitted entirely while slightly increasing the salt and lemon juice in the dressing to compensate.
Another effective approach is adding ingredients like toasted nuts, olives, or capers to enhance umami and salinity. The tahini-honey dressing can be adjusted by replacing honey with maple syrup or agave, maintaining sweetness while keeping the consistency similar. Because the base of sweet potato lentil salad is already rich in flavor from roasted vegetables and tahini, the vegan version remains balanced and satisfying.
What dressing variations work well with sweet potato lentil salad?
While the tahini-honey dressing is central to this sweet potato lentil salad, several variations can work effectively while maintaining balance. A lemon vinaigrette made with olive oil, lemon juice, Dijon mustard, and a touch of honey offers a lighter alternative with more acidity.
A yogurt-based dressing can introduce tang and creaminess, especially if combined with garlic and herbs. For a deeper flavor profile, a miso-tahini dressing can be used, incorporating white miso for umami richness.

How do you keep sweet potato lentil salad from becoming soggy?
Keeping sweet potato lentil salad from becoming soggy comes down to moisture control and timing. The most important step is allowing the roasted sweet potatoes and leeks to cool slightly before assembling, since excess steam can wilt greens too aggressively and create condensation.
Lettuce and arugula should be completely dry after washing, ideally spun in a salad spinner or patted thoroughly with paper towels. The dressing should always be added just before serving, not in advance, because the tahini-based dressing will quickly soften the greens and dilute texture. If storing leftovers, keep the dressing separate and only combine portions as needed.
What type of lentils work best for sweet potato lentil salad?
For sweet potato lentil salad, black lentils (also known as beluga lentils) are the most effective choice because they hold their shape after cooking and provide a firm, slightly chewy texture that contrasts well with soft roasted vegetables. Green lentils are another strong option, offering similar structure and a slightly earthy flavor.
Brown lentils can be used but tend to soften more, which may result in a less defined texture in the final dish. Red or yellow lentils are not recommended, as they break down quickly and become mushy, which disrupts the balance of the salad.
