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1
Make the Creamy Parmesan Dressing and set aside.
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2
Bring 2 medium pots of salted water to a boil.
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3
Add the potatoes to 1 pot and blanch until just tender, about 3 1/2 minutes.
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4
Drain in a colander.
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5
Add the green beans to the other pot and blanch until tender, 4 minutes.
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6
Drain in a colander.
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7
Heat 1/4 cup of the oil in a large skillet over medium-high heat.
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8
Add the drained potatoes, 1 teaspoon of the salt, and 1/2 teaspoon of the pepper, and cook, shaking the pan occasionally, until golden brown on both sides, 8 minutes.
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9
Add the remaining tablespoon of oil, garlic, and drained green beans.
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10
Stir to combine and cook for 1 minute.
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11
Add the tomatoes and olives and cook until the tomatoes are warmed through, stirring occasionally, 2 minutes.
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12
Remove from the heat.
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13
Add the mayonnaise, lemon juice, minced onion, hard-boiled egg, capers, parsley, and tarragon and stir to combine.
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14
Taste and adjust seasoning, if necessary.
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15
Combine the lettuce with the Creamy Parmesan Dressing and toss to coat.
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16
Arrange 3 or 4 leaves along the side of 6 large plates.
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17
Spoon the vegetables along the other side of the plate.
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18
Let sit while cooking the tuna.
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19
Season each tuna portion with 1/2 teaspoon of the remaining salt, and 1/4 teaspoon of the remaining pepper.
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20
Heat the remaining 1/4 cup of oil in 1 large skillet or 2 medium skillets, over medium-high heat.
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21
Add the tuna and sear, about 15 seconds per side.
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22
Remove from the pan and cut each crosswise into 4 equal pieces.
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23
Arrange the tuna slices down the middle of each plate, and serve.
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24
Bring a small saucepan of water to a boil.
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25
Add the egg and cook for 30 seconds until coddled.
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26
In a small bowl, combine the salt, pepper, garlic, and anchovies.
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27
Mash the anchovies with the back of a fork and mix into the other ingredients.
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28
Add the egg and whisk well to combine.
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29
Add the cheese, lemon juice, and mustard, and whisk well.
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30
Add the olive oil in a steady stream, whisking constantly.
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31
Add the Worcestershire and pepper sauces, and whisk well.
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32
Taste and adjust seasoning, if necessary.
