Sauté Onion: Heat olive oil in a skillet over medium heat. Add sliced onion and cook until soft and fragrant.

Cook Potatoes: Add chopped potatoes to the skillet, season with salt, and cook until tender, stirring occasionally.

Add Tomato Flavor: Stir in tomato paste or tomato sauce until potatoes are well-coated.

Add Tuna: Fold in drained canned tuna and heat through for 2–3 minutes.

Adjust Seasoning: Taste and add more salt, pepper, or herbs as desired.

Serve: Plate hot as a standalone meal or with a side salad.

Serving and Storage Tips: