
Classic Potato-Free Tuna Pasta Salad
A creamy, old-fashioned tuna pasta salad built on tender rotini, flaked tuna, crunchy celery, sharp red onion, and sweet peas, all tossed in a lemony mayonnaise dressing. No potatoes, just pasta, and it gets better after a rest in the fridge.
- Prep
- 24 min
- Cook
- 20 min
- Wait
- 1 hr 10 min
- Total
- 1 hr 54 min
- Makes
- About 8 cups (8 side-dish servings or 5 light lunches)
Steps
Before you start
- Plan ahead: the salad needs at least 1 hour in the fridge to chill and let the flavors blend.
- Drain the tuna very well (press the lid into the can) or the dressing will turn watery.
- Fill a large pot (at least 5 quarts / 5 liters) with water so the pasta cooks evenly without sticking.
- Clear space in the fridge for a large bowl and a rimmed baking sheet if you use the cooling method in step 3.
Boil the water
- Fill a large pot (5 quarts / 5 liters or larger) with 4 quarts (4 liters) of water and add the 1 tablespoon kosher salt for the pasta water.
- Cover and bring to a full rolling boil over high heat.
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Ready when: Large bubbles break the surface constantly, even when stirred.
Tip: Salt the water generously; pasta is seasoned only while it cooks.
Cook pasta and peas
- Add the rotini and stir well.
- Reduce heat slightly to keep a steady boil and cook for 10 minutes, stirring occasionally in the first 2 minutes so the spirals don't stick.
- In the final 1 minute, add the frozen peas to the pot.
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Ready when: Pasta is tender with a slight chew when bitten (cook 1 minute past al dente, since cold pasta firms up); peas are bright green and no longer icy.
Tip: Taste a piece at 9 minutes. Slightly soft pasta is better than chalky pasta in a chilled salad.
Drain and cool
- Drain the pasta and peas in a large colander.
- Rinse under cold running water for about 1 minute, tossing with your hands, until the pasta is no longer warm.
- Shake well, then spread on a rimmed baking sheet or leave in the colander for about 10 minutes to drip dry completely.
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Ready when: Pasta feels cool to the touch and looks dry, not glossy with water.
Tip: Warm pasta absorbs the dressing and turns the salad greasy and heavy, so make sure it is fully cooled.
Prep the vegetables
- While the pasta drains, cut the celery and red onion into ¼-inch (6 mm) dice and finely chop the parsley.
- Keep the pieces small so you get a bit of each in every bite.
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Ready when: Celery and onion pieces are roughly pea-sized and uniform.
Tip: If you find raw onion too sharp, soak the diced onion in cold water for 5 minutes, then drain and pat dry.
Whisk the dressing
- In a medium bowl, whisk together the mayonnaise, lemon juice, Dijon mustard, milk, celery seed (if using), 1 teaspoon salt, and ½ teaspoon pepper until completely smooth and pourable like thick cream.
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Ready when: Dressing is smooth with no streaks of mustard and drips slowly off the whisk.
Flake the tuna
- Open the tuna cans and press the lids firmly into the tuna to squeeze out all the water.
- Tip the tuna into a bowl and break it into small flakes with a fork, leaving some bite-sized chunks.
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Ready when: Tuna looks fluffy and fairly dry, with no liquid pooling in the bowl.
Tip: Don't mash it to a paste; chunks give the salad better texture.
Combine the salad
- Place the cooled pasta and peas in a large mixing bowl.
- Add the tuna, celery, red onion, and parsley.
- Pour the dressing over the top and fold gently with a large spoon or spatula for about 1 minute until everything is evenly coated.
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Ready when: Every piece of pasta is lightly coated, with no pockets of dry pasta or pooled dressing at the bottom.
Tip: Fold rather than stir vigorously so the tuna keeps its chunks and the peas stay whole.
Chill to blend
- Cover the bowl tightly and refrigerate for at least 1 hour (up to 24 hours) so the pasta absorbs the dressing and the flavors meld.
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Ready when: Salad is thoroughly cold, with the pasta slightly softer and the dressing clinging.
Adjust and serve
- Stir the chilled salad.
- If it looks dry or stiff (pasta absorbs dressing as it sits), stir in 1 to 2 tablespoons more milk.
- Taste and add a pinch more salt, pepper, or a squeeze of lemon if needed.
- Serve cold.
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Ready when: Salad is creamy and glossy, tastes bright and well seasoned.
Tip: Chilled food tastes less salty, so always do the final seasoning after chilling.
Good to know
Tips
- Rinse the cooked pasta in cold water and let it drain fully; this is the key to a creamy, not greasy or watery, salad.
- Reserve a little extra dressing or milk to refresh the salad after chilling, as the pasta keeps absorbing moisture.
- Dice celery and onion finely and evenly so they distribute through the salad.
- Add extras like chopped hard-boiled eggs, pickles, or a pinch of paprika on top for variety.
Make ahead
"Make the salad up to 1 day ahead and keep it covered in the fridge. Stir in 1 to 2 tablespoons of milk just before serving to refresh the creaminess."
Storage & reheating
"Refrigerate in an airtight container for up to 3 days. Do not leave at room temperature for more than 2 hours (1 hour if above 90°F / 32°C). Not recommended for freezing, since the mayonnaise dressing separates and the pasta turns mushy. Serve cold; stir in a splash of milk to loosen if needed."
Substitutions
- dry rotini pasta → Medium shells, elbow macaroni, or fusilli. Use the same weight; adjust the cooking time to the package directions.
- mayonnaise → ½ cup (115 g) mayonnaise plus ½ cup (115 g) plain full-fat Greek yogurt. Tangier and lighter; you may need an extra tablespoon of milk.
- red onion → Thinly sliced scallions (4, white and green parts). Milder flavor.
- canned solid light tuna in water (5-ounce / 142 g cans) → Canned tuna in olive oil, drained, or canned salmon. Oil-packed tuna is richer; drain it well and reduce the mayonnaise by 2 tablespoons if desired.
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- Meal
- Lunch
- Cuisine
- American
- Main ingredient
- Canned TunaPasta
- Diet
- HalalSugar-Free
- Method
- Stovetop
- Quick & Easy
- EasyMake Ahead
- Occasion
- Potluck





