A 250g pouch of cooked lentils gives this salad roughly 15g of protein before you add pumpkin seeds, which is why it works as a proper lunch rather than a decorative side dish.
Which ingredients make the best beetroot and lentil salad?
The beetroot and lentil base
Use 600g raw beetroot for four large portions. Smaller bulbs roast faster, but large beetroot gives you sweeter, softer pieces with less peeling work. Trim the leaves, scrub the skin, and cut each bulb into 2cm wedges. The skin slips off more cleanly that way.
For the lentils, use 500g cooked green or Puy-style lentils.
| Ingredient | Amount | What it does |
|---|---|---|
| Raw beetroot | 600g | Sweetness, colour and a soft centre |
| Cooked green lentils | 500g | Protein, fibre and a firm bite |
| Red onion | 1 small | Fresh crunch and gentle heat |
| Pumpkin seeds | 50g | Toasty texture and extra protein |
| Flat-leaf parsley | 25g | Freshness against the earthiness |
The dressing that stops it tasting sweet
Beetroot needs acid. Mix 3 tablespoons extra-virgin olive oil with 2 tablespoons apple cider vinegar, 1 tablespoon tahini, 1 teaspoon Dijon mustard, 1 teaspoon maple syrup, 1 small grated garlic clove, half a teaspoon of salt and plenty of black pepper.
You can use malt vinegar in an emergency, but it is harsher and turns the dressing into the loudest part of the dish. Add a squeeze of lemon only after tasting. Too much acid makes the lentils taste thin rather than lively.
How do you roast beetroot for a salad?
Roast it hot enough for browned edges
Heat the oven to 200°C fan, or 220°C conventional. Toss the beetroot wedges with 1 tablespoon of oil and a good pinch of salt. Spread them on a large baking tray with space between the pieces. If they touch, they steam. Steamed beetroot becomes soft but never develops the dark, jammy edges that make this salad worth making.
Roast for 35 to 45 minutes, turning the pieces once after 25 minutes. Start checking at 35 minutes by pushing in a small knife. The centre should offer slight resistance, not collapse. The smaller wedges may finish first, so remove them and leave the larger pieces in the oven. That small adjustment prevents half the tray becoming mush while the rest stays hard.
Cool the beetroot before mixing
Let the roasted beetroot sit for 10 minutes. It will keep cooking in its own heat, and the surface will firm slightly. This matters because hot beetroot can warm the herbs, soften the onion and turn the lentils pink before you have dressed them properly.
Do not wash roasted beetroot under cold water. You lose flavour and create a wet surface that will dilute the dressing. If you want clean cubes rather than wedges, roast the whole bulbs wrapped loosely in foil for 50 to 70 minutes, cool them, peel them, and cut them afterwards.
Keep the beetroot greens if they look fresh. Wash them, chop the tender stems, and wilt them in a frying pan for 3 to 4 minutes. They make a useful topping and reduce kitchen waste without changing the recipe.
How do you assemble the salad so it does not go soggy?
Follow this order
- Make the dressing first. Whisk the oil, vinegar, tahini, mustard, maple syrup, garlic, salt and pepper in a small bowl.
- Toast the pumpkin seeds in a dry frying pan over medium heat for 3 to 5 minutes. Shake the pan often and remove them as soon as they smell nutty.
- Drain the lentils thoroughly. If they look wet, spread them on a clean tea towel for five minutes. Extra water is the quickest way to weaken the dressing.
- Put the warm lentils in a wide bowl and toss them with two-thirds of the dressing. Warm lentils absorb flavour better than cold ones.
- Add the cooled beetroot, sliced red onion and chopped parsley. Fold gently so the beetroot keeps its shape.
- Taste before adding the final dressing. The salad may need another pinch of salt, a teaspoon of vinegar or a little more pepper.
- Scatter the pumpkin seeds over the top just before serving. They stay crisp when they do not sit in the dressing.
Use contrast, not more ingredients
The best version has four textures: tender beetroot, firm lentils, crisp onion and crunchy seeds. You do not need avocado, roasted peppers, olives and three types of leaves as well. Too many soft ingredients make the bowl heavy and hide the main flavours.
Serve the salad slightly warm for dinner, or chill it for lunch. If you are serving it with bread, choose something plain and chewy, such as sourdough. The salad already has sweetness, acid and plenty of seasoning, so a heavily flavoured garlic bread adds noise rather than balance.
Can you make roasted beetroot and lentil salad ahead?
How long does it keep?
Yes. Store the beetroot, dressed lentils, onion and herbs in an airtight container in the fridge for up to three days. Keep the pumpkin seeds in a separate jar. The flavour improves overnight because the lentils take on the dressing, but the herbs lose their brightness after the second day.
For the best packed lunch, make the salad the evening before and leave the seeds separate. Take it out of the fridge 20 minutes before eating. Very cold lentils taste dull, and the dressing becomes thicker as the olive oil chills.
Can you freeze it?
Freeze the roasted beetroot and plain cooked lentils separately if you have leftovers, but do not freeze the finished salad. Freezing breaks down the onion, herbs and dressing, leaving a watery mixture when it defrosts. Roasted beetroot keeps for about three months in a sealed freezer container. Defrost it overnight in the fridge and use it in soup, wraps or another salad.
What can replace the tahini?
Use 1 tablespoon smooth peanut butter for a slightly deeper, sweeter dressing, or use 2 tablespoons vegan yoghurt for a cooler and creamier result. For a nut-free version, leave out the tahini and add 1 teaspoon Dijon mustard plus another teaspoon of oil. Do not replace it with hummus unless you also reduce the salt; hummus already contains salt, lemon and often garlic.
The mistakes that ruin this salad are easy to avoid
Five mistakes worth avoiding
- Boiling the beetroot first: this fills it with water and removes the roasted flavour. Roast it directly unless you are cooking whole bulbs for another recipe.
- Using too little salt: lentils need seasoning. Add salt to the dressing and taste again after the lentils absorb it.
- Adding herbs while the beetroot is piping hot: parsley turns limp and dark. Cool the beetroot for 10 minutes before assembling.
- Skipping the acid: oil alone makes the bowl taste heavy. Vinegar gives the sweet beetroot a clean edge.
- Pouring in all the dressing at once: start with two-thirds, toss, then add the rest only if the lentils need it.
When this is not the right salad
Do not make this dish if you need a crisp green salad that can sit outside for hours. The beetroot will stain everything, and the herbs will wilt. Choose a cabbage and carrot slaw instead. Do not make it for someone who dislikes earthy flavours and cannot be persuaded by acid, mustard or fresh herbs.
