A good potato green bean salad balances soft, earthy potatoes with snappy green beans and a sharp vinaigrette that ties them together. This version cooks in about 25 minutes and holds up well in the fridge, so it works for meal prep or a backyard table. You get a side that tastes better after a short chill, not worse.
The method below keeps the potatoes from turning to mush and the beans from going dull and limp. We boil both in the same pot in stages, then dress them warm so the flavors soak in. It’s a practical, repeatable recipe rather than a fussy one. If you enjoyed this, our traditional three bean is worth trying next. Making this potato green bean salad at home is surprisingly straightforward once you know the key steps.
Why You’ll Love This Potato Green Bean Salad
- Two humble vegetables become a cohesive side with one simple vinegar-mustard dressing.
- It stays textured after chilling, unlike mayo-heavy salads that break or weep.
- You can make it a day ahead and pull it straight from the fridge.
- The ingredient list is short and inexpensive, about six items total.
- It pairs with grilled meat, fish, or a three bean salad on a buffet.
Ingredients You’ll Need
- 700 g waxy potatoes (Yukon Gold or red), peeled and cut into 2 cm cubes
- 400 g fresh green beans, ends trimmed and halved
- 3 tbsp extra-virgin olive oil
- 2 tbsp red wine vinegar
- 1 tbsp Dijon mustard
- 1 small shallot, finely minced (about 2 tbsp)
- 1 tsp fine sea salt, plus more for the boil water
- 1/4 tsp black pepper, freshly ground
Ingredient Substitutions
Waxy potatoes: Replace with an equal weight of fingerling potatoes if Yukon Gold aren’t available. Fingerlings have a slightly waxier bite and thinner skin, so you can leave the peel on for speed. The salad will look more rustic and hold shape even better after a day in the fridge. The potato green bean salad works well for weeknight cooking when time is limited.
Red wine vinegar: Use an equal amount of apple cider vinegar for a fruitier, softer acid. Cider vinegar is less sharp, so the dressing reads rounder and a touch sweeter. No change to cook time or technique is needed.
Dijon mustard: Swap in 1 tbsp whole-grain mustard for more texture and a milder heat. The seeds stay visible and pop between the teeth, giving a rustic look. The emulsion stays stable the same way, so the dressing won’t separate.
Shallot: Replace with 2 tbsp finely minced red onion if you don’t keep shallots. Red onion is sharper and more pungent raw, so rinse it in cold water for 30 seconds to take the edge off. The color adds a purple fleck to the finished potato green bean salad.
Extra-virgin olive oil: Use 3 tbsp avocado oil for a neutral flavor and higher smoke point. Avocado oil lets the vinegar and mustard lead instead of the fruitiness of olive oil. It won’t change timing but the dressing will taste cleaner and less grassy.
Step-by-Step Instructions
- Bring a large pot of water to a boil and add 1 tbsp salt. You need enough water to cover the potatoes by 3 cm so the temperature doesn’t crash when they go in.
- Add the cubed potatoes and set a timer for 8 minutes. They should be par-cooked and a knife meets slight resistance at the center.
- Add the green beans to the same pot. Cook both together for 6 minutes until beans are bright green and potatoes are just tender.
- Drain in a colander and shake off excess water. Spread on a tray for 3 minutes so surface steam escapes and they don’t steam-sog.
- Whisk olive oil, red wine vinegar, Dijon, shallot, salt, and pepper in a small bowl until creamy and emulsified.
- Place warm potatoes and beans in a serving bowl and pour the dressing over. Toss with a spatula until every piece is coated.
- Let the salad sit at room temperature for 10 minutes before serving, or chill for 1 hour for a firmer, colder side.
Pro Tips
Cut potatoes to a uniform 2 cm size so they finish in the same window; uneven chunks leave some chalky and some falling apart. A simple vinaigrette technique like whisking oil into acid slowly keeps the dressing from splitting when it hits warm vegetables.
Dress the vegetables while they’re still warm so the surface pores open and absorb flavor, which a cold salad can’t do. This is the main reason this potato green bean salad tastes deeper after resting.
Don’t skip the shallot rest; letting it sit in the vinegar for 2 minutes before adding oil takes the raw bite down without cooking it. You get aromatic sharpness instead of harsh onion throat-burn.
Save 1 tbsp of the dressing and stir it in right before serving if the salad looks dry after chilling. The potatoes drink dressing as they sit, so a small top-up restores shine.
Common Mistakes to Avoid
Overcooking the beans past the bright-green stage turns them olive and soft, and they won’t recover. Pull them at 6 minutes with a visible snap when bent.
Using starchy baking potatoes makes the cubes crumble during the toss and the salad turns gluey. Stick to waxy types that hold a cube shape under dressing and fork pressure.
Pouring dressing on cold, just-boiled vegetables that are still dripping causes it to slide off and pool at the bottom. Pat or air-dry for a few minutes so the oil emulsifies onto the surface instead.
Serving Suggestions
Plate the salad next to grilled chicken or salmon, where the vinegar cuts the richness of the meat. A green beans almondine on the same table gives a complementary texture contrast.
For a light lunch board, set it with crusty bread and hard cheese so the warm-style vinaigrette reads as a full plate. It also sits well beside a shirazi salad for a double-cold-vegetable spread.
Storage and Reheating
Keep leftovers in an airtight container in the fridge for up to 4 days; the vinegar acts as a mild preservative and the beans stay safe and crisp-tender. Don’t leave the made salad out for more than 2 hours at room temperature.
This dish is best cold or room temp, so reheating isn’t required, but if you want it warm, microwave in 30-second bursts to 60°C / 140°F and stir between. Freezing isn’t recommended because the potatoes turn grainy when thawed.
Recipe Variations
Herb Version
Stir 2 tbsp chopped fresh dill and 2 tbsp parsley into the dressing before tossing. The herbs add a clean, grassy note that suits the vinegar and makes the pasta salad crowd happy at a potluck.
Bacon Version
Fry 3 strips bacon until golden and crispy, crumble over the finished bowl, and use 1 tbsp bacon fat in place of equal oil. The smoke and salt shift the salad from vegetarian side to hearty brunch companion.
Warm Dijon Egg Version
Add 2 halved hard-boiled eggs on top and double the mustard for a sharper coat. The yolk softens into the dressing as it sits, making the plate closer to a potato gnocchi style richness without cream.
Lemon-Caper Version
Swap the vinegar for lemon juice and add 1 tbsp capers rinsed of brine. The salt pops and citrus brightens the beans, giving a piccata-like edge that pairs with white fish.
Potato Green Bean Salad
Description
A practical potato green bean salad that balances soft waxy potatoes with snappy green beans in a vinegar-mustard dressing. It tastes better after a short chill and works for meal prep or a backyard table.
Ingredients
Instructions
-
Boil Salted Water
Bring a large pot of water to a boil over high heat and add 1 tbsp salt. You need enough water to cover the potatoes by 3 cm so the temperature doesn't crash when they go in. The water should be at a rolling boil before adding vegetables.
-
Cook Potatoes
Add the cubed potatoes to the boiling water and set a timer for 8 minutes. They should be par-cooked and a knife meets slight resistance at the center. Keep the water at a gentle boil so the cubes stay intact.
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Add Green Beans
Add the green beans to the same pot with the potatoes and cook both together for 6 minutes. The beans should be bright green and the potatoes just tender when pierced with a fork. Watch for the bean color shift as your doneness cue.
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Drain and Dry
Drain the potatoes and beans in a colander and shake off excess water. Spread them on a tray for 3 minutes so surface steam escapes and they don't steam-sog. They should look dry to the touch before dressing.
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Make Dressing
Whisk olive oil, red wine vinegar, Dijon, shallot, salt, and pepper in a small bowl until creamy and emulsified. The mixture should thicken slightly and look uniform with no separated oil. Let the shallot sit in the vinegar for 2 minutes before adding oil to take the raw bite down.
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Dress Vegetables
Place the warm potatoes and beans in a serving bowl and pour the dressing over. Toss with a spatula until every piece is coated and the surface looks glossy. Dress them while still warm so the flavors soak in.
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Rest and Serve
Let the salad sit at room temperature for 10 minutes before serving, or chill for 1 hour for a firmer, colder side. The texture should be cohesive and the vegetables should have absorbed the dressing. Serve as a side or packed lunch.
Nutrition Facts
Servings 4
- Amount Per Serving
- Calories 280kcal
- % Daily Value *
- Total Fat 11g17%
- Saturated Fat 2g10%
- Sodium 480mg20%
- Total Carbohydrate 40g14%
- Dietary Fiber 6g24%
- Sugars 4g
- Protein 6g12%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
- Storage: Keep leftovers in an airtight container in the fridge for up to 4 days; don't leave the made salad out more than 2 hours.
- Make ahead: A green beans almondine on the same table gives a complementary texture contrast.
- Pro tip: Save 1 tbsp of dressing and stir in right before serving if the salad looks dry after chilling.
- Reheating: Microwave in 30-second bursts to 60°C / 140°F if you want it warm, stirring between bursts.
