No-Cook Tuna Corn Salad in a Jar
By the QuiteRecipes team (Jamy & Kaïna) | Food Service Professional, Early Childhood Expert & Parents
A lunch that builds itself: canned tuna, sweet corn, crunchy veggies, and a lemon yogurt dressing stacked in a jar and shaken when ready — no stove, no knife skills required.
Some lunch days barely feel like cooking, and this jar lives for exactly those days. It takes ten minutes, uses nothing that requires heat, and looks so pretty in the glass that it belongs in the fridge section of a deli. The trick is the layering: firm vegetables on the bottom, tuna in the middle, and the dressing at the top so the lettuce stays crisp until you shake it, right before eating. Every layer is a pantry staple or a fridge leftover, and the result is a genuinely filling, protein-forward lunch that survives a full day of classes. We love it for meal-prep Sundays because we can line up four jars in the time it takes to make one plate.
🥄 Ingredients
- 🫗 1 can (120g) chunk light tuna in water, drained
- 🫗 ¾ cup (120g) sweet corn kernels, drained (canned or thawed frozen)
- 🫗 ⅓ cup (50g) cherry tomatoes, halved
- 🫗 ¼ cup (40g) English cucumber, diced
- 🫗 ⅓ cup (40g) shredded romaine or baby spinach
- 🫗 2 tbsp (30g) plain Greek yogurt
- 🫗 1 tbsp lemon juice
- 🫗 1 tsp Dijon mustard
- 🫗 1 tsp olive oil
- 🫗 ¼ tsp black pepper
- 🫗 1 pinch salt
- 🫗 2 tbsp crumbled feta (optional)
Nutrition Facts*
*Nutritional information is an estimate and may vary based on ingredients, brands and portion sizes. Values are provided per serving.
👨🍳 Instructions
**Make the dressing:** Whisk the yogurt, lemon juice, Dijon mustard, olive oil, pepper, and a pinch of salt in a small bowl until smooth.
**Layer the jar:** In a clean 500ml mason jar, pack the cucumber and tomatoes at the very bottom, then the corn, then the tuna broken into flakes, then the lettuce pressed gently on top.
**Seal it:** Spoon the dressing over the top layer (it stays off the greens until you shake), screw on the lid, and refrigerate until you need it.
**Shake and eat:** When ready, shake the jar upside down a few times and dump everything into a bowl, or eat straight from the jar. Crumble feta on top if using.
⚠️ Common Mistakes
- ✕
Soggy salad. The lettuce stays fresh only because the dressing sits on top — if you mix everything in the jar the night before, you get a wilted mess.
- ✕
Waterlogged tuna. Undrained tuna turns the corn into soup; always press and drain it.
- ✕
One-note flavor. The mustard and lemon are doing the heavy lifting — skip them and the jar tastes flat, no matter how fresh the veggies are.
- ✕
Mushy tomatoes on day two. Cherry tomatoes release liquid overnight; if prepping for tomorrow, tuck them next to the cucumbers on the bottom, not in the middle.
🔄 Variations
Avocado version: Fold in half a diced avocado at shake time instead of the feta for creamy richness.
Beans instead of tuna: Swap in ½ cup white beans or chickpeas for a plant-based jar.
Swap the greens: Arugula or finely shredded kale both hold up nicely in the jar.
Go spicy: What this salad gains by being plain, a pinch of chili flakes or a squirt of sriracha in the dressing brings back.
🧊 Storage
- 📦
These jars hold 2–3 days in the fridge, dressing untouched on top. Shake only when you're about to eat, so each jar comes out as crisp as the first. Perfect to batch on Sunday night and leave in the dorm fridge.
💡 Chef Tips
Keep dressing on top. Layering is the whole point — the dressing hits the lettuce last, so nothing goes soggy after hours in the fridge.
Drain everything well. Canned tuna and canned corn both hide extra liquid; give them a good shake or press through a sieve so the jar doesn't turn watery.
Pack the greens loosely. If you cram the lettuce down hard it wilts against the glass; light packing keeps it crisp to the last bite.
No jar to spare? A big plastic container works the same, just tip it gently onto a plate — a real glass jar with a lid is the classic, though.
❓ FAQ
Do I need a specific jar for this?
Any glass jar with a tight lid around 500ml will do — mason jars are classic, but a washed-out pasta sauce jar works just as well.
Can I use canned corn straight from the can?
Yes, just drain and rinse it first. Frozen corn that's been thawed works too.
How many calories is this?
About 360 calories and 26g protein per full jar; it's a satisfying lunch that carries you through an afternoon of classes.
Is canned tuna safe to eat frequently?
Canned chunk light tuna, eaten a couple of times a week as part of a varied diet, is considered a low-mercury choice and a solid dorm-friendly protein.
🔗 Related Recipes
.webp)
About the Authors
This recipe and guide was developed, tested, and approved in our home kitchen and daily life. Jamy is a retired Food Service District Manager and Early Childhood Program Manager who spent his career overseeing multi-site restaurant operations, large-scale culinary production, and daycare menu management. Kaïna brings the ultimate real-world test: making sure it brings ease and joy to our kids on a busy weeknight.
Read more about our professional background and philosophy →