Instructions: Bring a medium saucepan of water to a boil over high heat. Add potatoes, haricots verts, and tomatoes. Reduce heat and simmer, covered, for 15 to 20 minutes, or until potatoes are just tender. Drain.

Meanwhile, rinse fish and pat dry with paper towels. Cut fish into 1/2- inch cubes. Spray a medium skillet with vegetable oil spray and place over medium-high heat. Cook fish for 2-4 minutes, or until tender, stirring gently. In a large mixing bowl, combine warm potatoes, haricots verts, and cooked fish. Coarsely chop tomatoes and add to potato mixture.

Wipe skillet clean and add the remaining ingredients except lettuce. Bring to a boil over high heat, stirring constantly. Remove from heat. Pour over tuna mixture and toss gently to coat. To serve warm, spoon tuna mixture over lettuce; to serve chilled, cover and refrigerate the tuna mixture separately from the lettuce. Before serving, toss tuna mixture and spoon over lettuce.

Cooks tip on green beans: When choosing green beans, avoid those that are bulging or leathery or that have brown spots.

Notes: This warm, low-fat version of the classic dish from the region of Provence features robust dried tomatoes that soften while the potatoes and green beans cook.

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