Bring 1 1/2 quarts of water to boiling in a saucepan. Add potatoes. Return to boiling and cook 5 minutes.
Add frozen vegetables. Return to boiling and cook 2 minutes (or to desired tenderness). Drain
In saucepan stir in soup, tuna and seasonings. Add hot, drained potato mixture. Stir and serve. (Note: If necessary, reheat on very low heat. Add water if needed.)
Serving suggestion: Green salad with vinaigrette dressing.