Grandma’s Onion Tuna is a delicious and straightforward dish that has stood the test of time, often evoking warm memories of family gatherings and simple, hearty meals. This recipe combines the savory, tangy flavors of finely chopped onions and drained tuna, creating a harmonious blend that excites the palate.

The preparation starts by mixing the base ingredients: the most essential being high-quality tuna and finely chopped onions which add a crisp texture and a slightly sweet but pungent flavor. In a medium bowl, they’re combined and then bound together with rich, creamy mayonnaise, ensuring every bite is decadently smooth.

A splash of lemon juice introduces a zesty note, complemented by the subtle heat and complexity of Dijon mustard. Seasoned with a pinch of salt — if needed — and freshly ground black pepper, this mixture becomes a perfect balance of flavors: salty, tangy, and slightly sharp.

For added freshness and a bit of crunch, some chopped fresh parsley and pickles can be folded into the mix. These ingredients infuse the tuna salad with a vibrant green hue and an additional layer of texture and taste.

Finally, this delectable mixture is generously spread over slices of bread, creating an open-faced sandwich that’s both rustic and refined. Grandma’s Onion Tuna is not just a meal; it’s a nostalgic experience, reminiscent of cozy kitchen tables and the comfort of home-cooked food. This dish is perfect for a quick lunch or a light dinner, offering a nutritious and satisfying option that’s also incredibly easy to make.

The charm of Grandma’s Onion Tuna lies in its simplicity, showcasing how a few basic ingredients can be transformed into something truly special and flavorful.

Ingredients

2 cans tuna, drained
1 medium onion, finely chopped
1/2 cup mayonnaise
2 tbsp lemon juice
1 tsp Dijon mustard
1/4 tsp salt (optional)
1/4 tsp black pepper
1 tbsp chopped fresh parsley (optional)
1/4 cup chopped pickles (optional)
4 slices bread (for serving)

Directions

1. In a medium bowl, combine the drained tuna.
2. Add the finely chopped onion to the tuna.
3. Stir in the mayonnaise until well mixed.
4. Add the lemon juice, Dijon mustard, salt (if using), and black pepper.
5. Mix all the ingredients together until evenly combined.
6. If desired, fold in the chopped fresh parsley and chopped pickles.
7. Serve the mixture on top of the slices of bread.