Sour Cream and Onion Potato Salad tastes like your favorite sour cream and onion chips met classic picnic potato salad and decided to upgrade the whole cookout. It works for busy weeknights, potlucks, and summer parties, and you can finish it in about 35 to 40 minutes including chill time. I grew up as the “potato salad person” at family gatherings, and this version still disappears first from the table.
Why Sour Cream and Onion Potato Salad Is Worth It
This potato salad hits all the comfort notes: creamy, tangy, a little sharp from onion, and just enough crunch. It tastes familiar and nostalgic, but the sour cream and onion combo gives it a fresh twist that feels a bit more fun than the usual mayo-only bowl.
You can prep it ahead, chill it, and pull it out right when everyone starts circling the food. It travels well, works with burgers, grilled chicken, or veggie skewers, and you can tweak the seasoning to fit kids or spice lovers without extra effort.
“This Sour Cream and Onion Potato Salad tastes like the best part of a cookout in one bowl, and everyone asked for seconds. ★★★★★”
Ingredients You Need
Potatoes
- 2 pounds Yukon Gold potatoes, scrubbed, cut into 1 inch chunks
- Yukon Golds hold their shape and stay creamy inside.
- Use red potatoes if you prefer a slightly firmer bite.
- Avoid very starchy russets, since they break down faster and turn mushy.
Sour cream and mayo base
- 1 cup full fat sour cream
- Full fat gives the best texture and flavor.
- Use light sour cream if you want, but the dressing will taste a bit less rich.
- 1/3 cup mayonnaise
- Use a neutral, good quality mayo like Hellmann’s or Duke’s.
- Swap in avocado oil mayo if you want a slightly lighter taste.
Onion flavor and aromatics
- 1/3 cup finely minced green onions (both white and green parts)
- 1/4 cup very finely minced red onion
- 2 teaspoons onion powder
- 1 teaspoon garlic powder
- 1 teaspoon fine sea salt, plus more to taste
- 1/2 teaspoon freshly ground black pepper
You can use only green onions if you want a milder onion flavor. Use chives instead of green onions for a softer, more herby taste.
Tang and freshness
- 2 tablespoons apple cider vinegar or white wine vinegar
- 2 teaspoons Dijon mustard
- 1 to 2 tablespoons fresh lemon juice, to taste
- 1/4 cup finely chopped fresh parsley
- 2 tablespoons finely chopped fresh dill (optional but highly recommended)
Vinegar and lemon juice keep the salad bright and prevent it from tasting flat. Taste and adjust the acid at the end, since cold potatoes mute flavors.
Crunchy mix-ins
- 2 ribs celery, finely diced
- 1/3 cup finely chopped dill pickles or pickle relish
- 1/3 cup finely chopped crispy bacon, cooled (optional)
- 1/3 cup shredded sharp cheddar cheese (optional, for a loaded baked potato vibe)
Use dill pickles for a tangy bite or sweet relish if you like a sweeter salad. Skip bacon and cheese if you want a lighter bowl.
Pantry shortcut option
- 2 to 3 tablespoons dry onion soup mix
- Stir this into the dressing if you want a stronger “chip dip” flavor.
- Reduce added salt slightly, since soup mix already contains salt.
Equipment
- Large pot for boiling potatoes
- Colander
- Large mixing bowl
- Small bowl or measuring cup for dressing
- Sharp knife and cutting board
- Rubber spatula or large spoon
- Measuring cups and spoons
Quick Tips & substitutions
- Salt the potato cooking water generously so the potatoes taste seasoned from the inside.
- Cut potatoes into even chunks so they cook at the same rate.
- Start potatoes in cold water, not hot, so they cook evenly and do not split.
- Cook potatoes until just fork tender; stop before they fall apart.
- Drain potatoes well and let steam off so extra moisture does not water down the dressing.
- Toss warm potatoes with vinegar first, then cool, so they soak up more flavor.
- Chill the salad at least 30 minutes before serving so flavors blend.
- Use Greek yogurt for part of the sour cream if you want extra protein and tang.
- Swap green onions with chives or finely minced shallots if you want a gentler onion note.
- Leave out bacon and cheese for a lighter salad, or add them for a loaded baked potato style bowl.
- Stir in a spoonful of onion soup mix if you want a stronger sour cream and onion chip flavor.
- Taste again right before serving and adjust salt, pepper, and lemon juice, since flavors soften in the fridge.
How to Make Sour Cream and Onion Potato Salad
Step 1: Prep and cook the potatoes
Rinse the potatoes and cut them into 1 inch chunks so they cook evenly. Place the potatoes in a large pot and cover them with cold water by about 1 inch. Add 1 to 2 tablespoons of salt to the water and bring it to a gentle boil over medium high heat.
Reduce the heat to maintain a steady simmer. Cook the potatoes for about 10 to 12 minutes, until a fork slides in with just a little resistance. Check a few pieces so you do not overcook the batch.
Step 2: Drain and season the warm potatoes
Drain the potatoes in a colander and let them sit for 2 to 3 minutes so steam escapes. Transfer the warm potatoes to a large mixing bowl. Sprinkle the vinegar over the warm potatoes and toss gently so you do not mash them.
Let the potatoes cool until just slightly warm or room temperature, about 15 to 20 minutes. This step helps the potatoes soak in flavor while they still feel warm, but you avoid melting the dressing.
Step 3: Mix the sour cream and onion dressing
In a separate bowl, add sour cream, mayonnaise, Dijon mustard, onion powder, garlic powder, salt, and black pepper. Whisk until the mixture looks smooth and creamy. Stir in the lemon juice, green onions, red onion, parsley, dill, and pickle or relish.
Taste the dressing and adjust salt, pepper, and acid. If you plan to add onion soup mix, stir it in now and taste again before you add more salt.
Step 4: Combine potatoes and dressing
Pour about two thirds of the dressing over the cooled potatoes. Use a rubber spatula or large spoon and fold gently until the potatoes look coated. Add celery, bacon, and cheddar if you use them, and fold again.
Check the texture and add more dressing as needed. You want a creamy coating, but not a soupy bowl. The potatoes will soak in some dressing as they chill, so keep it slightly creamier than you think you need.
Step 5: Chill and finish
Cover the bowl and chill the potato salad in the fridge for at least 30 minutes, and up to 24 hours. Right before serving, stir the salad, then taste and adjust seasoning with more salt, pepper, or lemon juice. If the salad looks a little dry after chilling, stir in a spoonful or two of the remaining dressing or a splash of sour cream.
Sprinkle extra green onions, parsley, or dill on top for a fresh look. Add a little crumbled bacon or shredded cheese on the surface if you want that loaded baked potato style finish.
Recipe Variations
- Gluten free: The basic recipe stays gluten free; just check labels on onion soup mix, bacon, and mustard.
- Lighter version: Use half sour cream and half plain Greek yogurt, and reduce or skip mayo.
- Vegan: Use vegan mayo and vegan sour cream, skip bacon and cheese, and use maple syrup pickles instead of standard relish if needed.
- Extra tangy: Add more vinegar and lemon juice, and increase pickles or relish.
- Spicy: Stir in minced jalapeño, a pinch of cayenne, or a spoonful of hot sauce.
- Herb heavy: Double the fresh dill and parsley, and add chopped chives.
- Loaded style: Add more bacon, cheddar, and a sprinkle of smoked paprika.
- Extra crunchy: Increase celery and pickles, and add finely chopped bell pepper.
Ways to Serve Sour Cream and Onion Potato Salad
- Serve chilled with grilled chicken, burgers, hot dogs, or veggie kebabs.
- Pack it in lunch boxes with sliced cucumbers, cherry tomatoes, and hard boiled eggs.
- Spoon it into lettuce cups for a fun, handheld side.
- Serve it as part of a picnic spread with coleslaw, fruit salad, and corn on the cob.
- Use leftovers as a topping for baked potatoes or roasted vegetables.
Storage Success
Store Sour Cream and Onion Potato Salad in an airtight container in the fridge for up to 3 to 4 days. Stir it before serving, since some dressing may settle at the bottom. If it looks a bit dry, loosen it with a spoonful of sour cream or a splash of lemon juice. Keep it chilled at all times and avoid leaving it at room temperature for more than 1 to 2 hours, especially during hot weather.
Sour Cream and Onion Potato Salad
Ingredients
Instructions
- Place the potato chunks in a large pot and cover with cold water by about 1 inch. Add 1–2 tablespoons of salt to the water and bring to a gentle boil over medium-high heat.
- Reduce to a steady simmer and cook for 10–12 minutes, until the potatoes are just fork-tender but not falling apart. Check several pieces for doneness.
- Drain the potatoes in a colander and let them sit for 2–3 minutes so excess steam escapes. Transfer the warm potatoes to a large mixing bowl.
- Sprinkle the vinegar evenly over the warm potatoes and toss gently to coat without mashing. Let cool until just slightly warm or at room temperature, about 15–20 minutes.
- In a medium bowl, whisk together the sour cream, mayonnaise, Dijon mustard, onion powder, garlic powder, 1 teaspoon fine sea salt, and black pepper until smooth and creamy.
- Stir in the lemon juice, green onions, red onion, parsley, dill (if using), and chopped pickles or relish. Taste and adjust salt, pepper, and lemon juice as needed.
- If using dry onion soup mix for a stronger sour cream and onion flavor, stir in 2–3 tablespoons now, then taste before adding any additional salt.
- Pour about two-thirds of the dressing over the cooled potatoes. Using a rubber spatula or large spoon, gently fold until the potatoes are evenly coated.
- Fold in the celery, bacon, and cheddar cheese, if using. Add more dressing as needed until the salad is creamy but not soupy; keep it slightly creamier than you want, as the potatoes will absorb some dressing as they chill.
- Cover and refrigerate for at least 30 minutes and up to 24 hours to let the flavors meld.
- Before serving, give the salad a good stir, taste, and adjust with more salt, pepper, or lemon juice. If it seems a bit dry, add a spoonful or two of remaining dressing or an extra splash of sour cream.
- Garnish with additional green onions, parsley, dill, and a little extra bacon or cheddar on top, if desired, before serving chilled.
Notes
Approximate per serving (8 servings, with bacon and cheese): 290–320 calories; fat 20–23 g; saturated fat 7–8 g; carbohydrates 23–26 g; fiber 2–3 g; sugars 3–4 g; protein 5–7 g; sodium 520–650 mg. Values will vary based on brands, optional mix-ins, and portion size.
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