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Lentil, Feta, and Herb Salad

Warm lentils and caramelized roasted carrots tossed in a Dijon-balsamic vinaigrette with peppery arugula, parsley, crumbled feta, and toasted walnuts.

By Camille McLaughlin, RDN, LD, registered dietitian nutritionist

Built forVegetarianLunch
Also fits Balanced Gut-Health High-Protein High-Fiber Mediterranean GLP-1
Carrots roasted until their edges darken turn jammy and properly sweet, and warm lentils dressed right off the heat drink up the dijon and balsamic in a way they never will once cold. Feta crumbles salty over the top, toasted walnuts snap through both, and arugula and parsley folded in last keep the bowl peppery and grassy.
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Why You'll Love This Recipe

This is a hearty lunch bowl for anyone who wants a meatless meal that actually holds them until dinner. Lentils give it real staying power, roasted carrots bring natural sweetness, and the feta and walnuts make it feel like a composed salad rather than a side. It comes together in one bowl and travels well, which makes it a reliable midday plate whether you are eating at home or packing it to go.

Warm lentils and warm carrots take a dressing that cold ones will not. Warm legumes and roasted vegetables drink up a vinaigrette far more readily than cold ones, so the Dijon, balsamic, and olive oil season the lentils from the inside instead of just coating the surface. Roasting the carrots at high heat caramelizes their edges and concentrates their sweetness, which plays against the sharp mustard and briny feta. The arugula goes in last so it wilts only slightly, keeping its peppery bite and fresh texture.

Texture pulls one way and the nutrition pulls another. Tender lentils, silky roasted carrots, crunchy walnuts, and creamy feta hit every note at once, so no single bite feels monotonous. Between the lentils, the walnuts, and the feta you get a meal that is high in fiber and protein and rich in good fats, the combination that tends to keep hunger quiet for hours rather than leaving you reaching for a snack an hour later.

Bowl of glossy brown lentils with orange roasted carrot coins, white feta, and toasted walnut pieces. Save
Prep: 15 minsCook: 20 minsTotal: 35 minsMakes: 4 servingsServing: About 1½ cups

Ingredients

Serves4Amounts change with the number. The nutrition panel is per serving, so it stays the same.
  • 3 cups cooked lentils
  • 1 1/3 cups crumbled feta
  • 5 carrots, sliced
  • 4 cups arugula
  • 3/4 cup walnuts, toasted
  • 3 1/2 tbsp olive oil
  • 1 tbsp Dijon mustard
  • 2 tbsp balsamic vinegar
  • 1/3 cup parsley

Instructions

  1. Cook the lentils: If starting from dry lentils, rinse them under cold water, then simmer in plenty of unsalted water until tender but still holding their shape, about 20 to 25 minutes. Drain well and keep them warm; do not let them cool completely, since they take on the dressing best while warm.
  2. Roast the carrots: Preheat the oven to 425°F (220°C). Peel the carrots and slice them into even coins or diagonal pieces so they cook at the same rate. Toss them with a little of the olive oil, spread them in a single layer on a baking sheet, and roast for 18 to 20 minutes until tender and browned at the edges, stirring once halfway through.
  3. Make the vinaigrette: In a small bowl, whisk the remaining olive oil with the Dijon mustard and balsamic vinegar until the dressing is smooth and slightly thickened.
  4. Toast the walnuts and chop the parsley: Toast the walnuts in a dry skillet over medium heat, stirring often, until fragrant and lightly golden, about 4 to 5 minutes, then roughly chop them once cool enough to handle. Roughly chop the parsley leaves.
  5. Combine warm: In a large bowl, toss the warm lentils and roasted carrots with the vinaigrette and chopped parsley so everything absorbs the dressing while still warm.
  6. Finish and serve: Fold in the arugula just until it begins to wilt slightly from the residual heat. Crumble the feta over the top and sprinkle with the toasted walnuts just before serving.
Nutrition Facts
4 servings per recipe
Serving sizeAbout 1½ cups
Calories576
% Daily Value*
Total Fat 35g45%
Saturated Fat 10g51%
Trans Fat 0g
Cholesterol 43mg14%
Sodium 1671mg73%
Total Carbohydrate 44g16%
Dietary Fiber 16g56%
Total Sugars 10g
Includes 0g Added Sugars 0%
Protein 25g
Vitamin D 0.2mcg1%
Calcium 356mg27%
Iron 6.8mg38%
Potassium 1021mg22%
* Percent Daily Values are based on a 2,000 calorie diet. Values are computed from USDA FoodData Central and are estimates. Per serving (About 1½ cups).

Variations

  • Swap the green: Trade the arugula for baby spinach or chopped kale for a milder, less peppery base; if you use kale, massage the leaves with a little of the dressing first to soften them.
  • Change the crunch: Use toasted pecans, almonds, or pumpkin seeds in place of the walnuts for a different texture and flavor; pumpkin seeds keep it nut-free.
  • Brighter and warmer: Add lemon zest and a pinch of ground cumin or coriander to the vinaigrette for a warmer, more citrusy finish that leans into the roasted carrots.
  • Roast a second vegetable: Roast cubed sweet potato or red onion alongside the carrots for more heft and sweetness on the plate.
  • Creamier crumble: Swap the feta for crumbled goat cheese for a softer, tangier bite; this keeps it a dairy-based cheese but changes the texture and sharpness.

Storage & Leftovers

Store leftovers in an airtight container in the refrigerator for up to four days. The lentils and carrots keep especially well, though the arugula softens over time, so the salad is best within the first day or two if you want the greens crisp.

This salad is good cold or at room temperature and does not really need reheating, but if you prefer it warm, gently warm just the lentils and carrots in a skillet or microwave, then add fresh arugula, feta, and walnuts afterward so the greens stay fresh and the nuts stay crunchy.

To get ahead, cook the lentils, roast the carrots, whisk the vinaigrette, and toast the walnuts up to three days in advance and refrigerate them separately. Toss everything together with the arugula and feta just before serving so nothing turns soggy.

Notes & Tips

A few small things make this salad taste like it came from a good deli rather than a lunch thrown together in a hurry.
  • Pick the right lentils: Use green or brown lentils, or French lentils, which hold their shape after cooking. Red lentils break down into mush and will not give you the firm, distinct texture this salad depends on.
  • Salt with the feta in mind: Feta is quite salty, so taste the dressed lentils before adding the cheese and go easy on any extra salt; you can always add more at the end.
  • Dress while warm: The single biggest flavor upgrade is tossing the lentils and carrots with the vinaigrette while they are still warm so they soak it up instead of just wearing it.
  • Watch the walnuts closely: Toasted walnuts go from fragrant to bitter and burnt quickly. Pull them off the heat as soon as you can smell them and they look a shade darker.
  • Keep components separate for packing: If you are making lunches for the week, pack the lentil-carrot mixture separately from the arugula, feta, and walnuts and combine them the morning you eat, so the greens stay crisp and the nuts stay crunchy.
  • Serve it as a fuller meal: For a bigger plate, spoon it over a scoop of cooked grains or alongside warm flatbread to round it out.

Nutrition & Mindful Eating

Roasted carrots go sweet and sticky against salty feta here, with lentils underneath and enough chopped parsley running through it that every forkful tastes green and fresh.
  • This is a salad built to be eaten with a spoon. Lentils and roasted carrots make the base, feta and walnuts sit on top, and the arugula and parsley are folded through at the end, so nothing in the bowl is only a garnish.
  • Carrots roasted until their edges darken concentrate into something jammy and genuinely sweet, and the beta-carotene that makes them orange comes along with that sweetness.
  • Lentils dressed while they are still warm drink up the mustard and balsamic in a way they will not once they cool, and their fiber and plant protein are what give this bowl its staying power.
  • Feta crumbles into salty, tangy pieces that season the lentils they land on, and it brings calcium and a little protein while doing most of the seasoning work in the bowl.
  • Arugula brings a peppery bite, parsley brings a clean grassy one, and toasted walnuts snap through both. The dijon and balsamic whisked into olive oil hold it together with a sharp, mustardy edge.
  • As you eat, let the sweet roasted carrot land against the salt of the feta and the pepper of the arugula, and let those swings keep you at the table a little longer.

Frequently Asked Questions

Can I use canned lentils instead of cooking them from dry?

Yes. Drain and rinse them well, then warm them gently in a skillet before dressing so they still take on the vinaigrette. They will be a little softer than freshly simmered lentils, so toss gently to keep them intact.

Why did my salad turn out soggy?

That usually means the arugula sat in the dressing too long or the salad was fully assembled ahead of time. Fold the arugula in just before serving and keep the greens, feta, and walnuts separate until you eat if you are packing it for later.

Can I make this dairy-free?

Yes. Leave out the feta or replace it with a dairy-free crumble. Since feta carries much of the salt and tang, add a little extra vinegar and taste for salt to keep the flavors balanced.

Is this meant to be eaten warm or cold?

Either works. It is best when the lentils and carrots are dressed warm, but it holds up well chilled or at room temperature, which makes it a good packed lunch.