Halibut Sandwiches with Grilled Puttanesca Salsa

Ingredients

• 2 cups loosely packed arugula leaves, cleaned and dried
• ¼ cup mayonnaise
• 2 garlic cloves, halved
• 8 slices Italian bread
• Freshly ground black pepper
• Extra-virgin olive oil
• 4 (6-ounce) halibut fillets, rinsed and patted dry
• + 3 more ingredients
• • 1 tablespoon Dijon mustard
  • Kosher salt
  • Grilled Puttanesca Salsa

Heat grill to medium-high. Lightly brush fish with olive oil, and season to taste with kosher salt and black pepper. Grill fish over direct heat until firm and opaque throughout, about 4 to 6 minutes per side. Fish should flake easily but remain moist. Brush bread lightly with olive oil, and gril...

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