Lentil Salad Mustard Vinaigrette

Featured in: Everyday Family Plates

This dish blends tender lentils with juicy cherry tomatoes, crisp cucumber, red onion, and fresh parsley, all tossed in a zesty mustard vinaigrette. The lentils are simmered until just tender, providing a hearty base full of fiber and protein. The vinaigrette combines olive oil, red wine vinegar, Dijon mustard, and a touch of honey or maple syrup for balance, creating a bright and flavorful dressing. Chilling the salad enhances the melding of flavors, making it a refreshing option for a nutritious lunch or side.

Updated on Wed, 24 Dec 2025 10:52:00 GMT
Beautiful bowl of Lentil Salad, showcasing plump lentils, colorful veggies, and zesty dressing. Save
Beautiful bowl of Lentil Salad, showcasing plump lentils, colorful veggies, and zesty dressing. | poppyhearth.com

There's something about opening the pantry and finding dried lentils that makes me think of a friend who swears by keeping them on hand. One Tuesday, I had exactly ten minutes before guests arrived, and those little green gems became my salvation. I boiled them while prepping vegetables, and by the time everyone showed up, I had this gorgeous, protein-packed salad that tasted like I'd spent hours in the kitchen. Now it's my go-to when I want something that feels fancy but comes together without stress.

I remember bringing this to a potluck last summer where everyone kept circling back to it between the heavier dishes. Someone asked for the recipe, then someone else did, and by the end of the night I was writing it down on the back of a napkin. That's when I realized this wasn't just lunch food, it was something people genuinely wanted to recreate.

Ingredients

  • Green or brown lentils (1 cup dried): These hold their shape beautifully when cooked, unlike red lentils which turn to mush. I learned this the hard way with a soupy mess years ago.
  • Water and bay leaf: The bay leaf whispers flavor into the lentils without overpowering them, and three cups of water is the sweet spot for tender without split.
  • Cherry tomatoes: Halving them instead of chopping gives you little bursts of juice in every bite, and they stay firm enough not to get watery overnight.
  • Cucumber and red onion: The crisp cool of cucumber balances the earthiness of lentils, while red onion adds a gentle sharpness that makes your taste buds wake up.
  • Fresh parsley: It's the green finishing touch that makes this feel alive and intentional rather than just mixed together.
  • Extra virgin olive oil: This isn't the place to use cooking oil; the quality here matters because it's tasting straight up with nothing to hide behind.
  • Red wine vinegar and Dijon mustard: This combo creates a vinaigrette with actual character, the mustard emulsifies everything and adds a subtle depth.
  • Honey or maple syrup (optional): Just a tiny bit rounds out the sharp edges and brings balance, but honestly it's your call.

Instructions

Get the lentils tender:
Rinse your lentils and add them to a saucepan with water and a bay leaf. Bring everything to a boil, then let the heat drop so it's barely bubbling. After about 20-25 minutes, the lentils should be soft enough to press between your fingers but still holding their shape.
Build your salad base:
Once the lentils cool down, combine them with your halved tomatoes, diced cucumber, minced red onion, and chopped parsley in a large bowl. It should look colorful and fresh, like you actually put thought into it.
Make the vinaigrette:
In a separate small bowl or jar, whisk together olive oil, red wine vinegar, Dijon mustard, your sweetener if using it, minced garlic, salt, and pepper. Whisk it until the oil and vinegar start holding together rather than separating immediately.
Bring it together:
Pour the vinaigrette over your lentil mixture and toss gently so everything gets coated without bruising the vegetables. Taste it and adjust—maybe it needs more salt, maybe it's sharp enough, trust your instincts.
Let it rest:
Pop it in the fridge for 15-30 minutes before serving. This isn't just a rule, it's when the magic happens and all the flavors actually know each other.
Freshly tossed Lentil Salad, a vibrant mix of lentils and vegetables, perfect for a light, healthy meal. Save
Freshly tossed Lentil Salad, a vibrant mix of lentils and vegetables, perfect for a light, healthy meal. | poppyhearth.com

Last winter I made this for a friend who was stressed about eating well during a chaotic work period. She'd text me saying she was grabbing the lentil salad from her fridge again, and somehow that simple act of reaching for something nourishing seemed to settle her mind a little bit. Food doesn't always need to be complicated to matter.

Flavor Combos That Changed the Game

Once you have the base down, this salad becomes a canvas. I started adding diced red bell pepper for sweetness, then tried crumbled feta just to see what would happen, and it completely elevated things. Spinach mixed in adds earthiness, and shredded carrots give you extra crunch. The mustard vinaigrette holds all of it together beautifully, strong enough to anchor whatever additions you play with.

Why This Works for Every Occasion

This salad doesn't have an identity crisis, which I appreciate. Pack it for lunch on Monday and it tastes just as good at your desk as it does at a dinner party. It's protein-rich enough to stand alone, but it also plays nicely as a side dish next to grilled chicken or fish. People with dietary restrictions breathe easier around it because as written it's vegetarian, gluten-free, and dairy-free, though you can absolutely add cheese if that's your move.

Making It Your Own

The beauty here is that lentils take direction well. If you want it herby, add extra parsley or try cilantro. If you're in the mood for something with more punch, a touch more garlic in the vinaigrette does wonders. Some people swear by adding a sprinkle of cumin to the lentils while they cook, and honestly, that's not a bad instinct.

  • Keep the lentils slightly al dente because they'll continue softening as the salad sits and absorbs dressing.
  • Taste before you chill it because cold mutes flavors slightly, so you want it seasoned a touch bolder than seems right at room temperature.
  • This keeps beautifully in the fridge for three to four days, so make extra without guilt.
Close-up of a refreshing Lentil Salad, with visible lentils, tomatoes, and cucumber, ready to serve and enjoy. Save
Close-up of a refreshing Lentil Salad, with visible lentils, tomatoes, and cucumber, ready to serve and enjoy. | poppyhearth.com

This salad taught me that simple food done right doesn't need apologies or explanations. It just sits there on the table being exactly what it promised: fresh, nourishing, and honestly delicious.

Recipe Questions

How do I cook lentils for this salad?

Rinse lentils well and simmer with water, bay leaf, and salt for 20–25 minutes until tender but not mushy. Drain and cool before mixing.

Can I substitute ingredients in the vinaigrette?

Yes, you can swap honey for maple syrup for a vegan option or adjust olive oil and vinegar amounts to taste.

What vegetables complement this salad best?

Cherry tomatoes, cucumbers, red onions, and fresh parsley add crunch and freshness, but bell peppers or shredded carrots work well too.

Can this salad be served warm?

While best chilled, serving at room temperature is also enjoyable and allows flavors to meld nicely.

How should I store leftovers?

Keep the salad covered in the refrigerator for up to 2 days to maintain freshness and flavor.

Lentil Salad Mustard Vinaigrette

Tender lentils combined with fresh tomatoes, cucumber, and a tangy mustard vinaigrette for a healthy dish.

Prep duration
15 minutes
Cooking duration
25 minutes
Total duration
40 minutes
Created by Grace Holloway


Skill level Easy

Cuisine type International

Makes 4 Portions

Dietary details Meat-free, No dairy, No gluten

Required Ingredients

Lentils

01 1 cup dried green or brown lentils, rinsed
02 3 cups water
03 1 bay leaf
04 1/2 teaspoon salt

Vegetables

01 1 cup cherry tomatoes, halved
02 1 cup cucumber, diced
03 1/4 cup red onion, finely chopped
04 1/4 cup fresh parsley, chopped

Mustard Vinaigrette

01 3 tablespoons extra virgin olive oil
02 1 1/2 tablespoons red wine vinegar
03 1 teaspoon Dijon mustard
04 1 teaspoon honey or maple syrup (optional)
05 1 small garlic clove, minced
06 1/4 teaspoon salt
07 1/4 teaspoon black pepper

How-To Steps

Step 01

Cook Lentils: Combine lentils, water, bay leaf, and salt in a saucepan. Bring to a boil, then reduce heat to simmer uncovered for 20 to 25 minutes until lentils are tender but not mushy. Drain, discard bay leaf, and let cool to room temperature.

Step 02

Prepare Vegetables: In a large bowl, mix cooked lentils with cherry tomatoes, cucumber, red onion, and parsley.

Step 03

Make Mustard Vinaigrette: Whisk together olive oil, red wine vinegar, Dijon mustard, honey or maple syrup if using, garlic, salt, and pepper in a small bowl or jar until emulsified.

Step 04

Combine and Toss: Pour vinaigrette over lentil and vegetable mixture and toss gently to combine. Adjust seasoning to taste.

Step 05

Chill and Serve: Refrigerate for 15 to 30 minutes to enhance flavors. Serve chilled or at room temperature.

Tools needed

  • Saucepan
  • Colander
  • Large mixing bowl
  • Small bowl or jar for vinaigrette
  • Whisk
  • Cutting board and knife

Allergy notices

Check ingredients for allergens. Reach out to your healthcare provider with any questions.
  • Contains mustard.
  • Gluten-free and dairy-free as prepared.
  • Contains milk if cheese is added.
  • Verify labels for hidden allergens.

Nutrition breakdown (per portion)

These details are meant for general advice, not medical guidance.
  • Energy: 240
  • Fats: 8 g
  • Carbohydrates: 32 g
  • Proteins: 10 g