French in a Flash: Niçoise Tuna Melt Recipe

Name: French in a Flash: Niçoise Tuna Melt Recipe
Ingredients: 1 1-pound tuna steak; 1 tablespoon olive oil; 1/2 teaspoon herbes de Provence; Salt; Pepper; 1/2 baguette, halved horizontally; 1 clove garlic, peeled; 5 tablespoons mayonnaise; 2 teaspoons black olive tapenade; 1 teaspoon Dijon mustard; 1 teaspoon white wine vinegar or lemon juice; 1/2 teaspoon anchovy paste; 3 cornchions, finely diced; 16 Niçoise olives, chopped; 1/2 shallot, finely diced; 1 heaping tablespoon chopped flat-leaf parsley; 3 1/2 ounces Gruyère, sliced thinly on a mandoline into about 12 slices; 1 cup baby arugula; 1/2 cup oven-dried tomatoes