dark green leaves discarded and remaining leaves torn
2 ounces prosciutto
chopped
1/2 teaspoon grated lemon zest
Extra-virgin olive oil
Four 6-ounce skinless salmon fillets
Salt
Pepper
1 1/2 tablespoons Dijon mustard
1 1/2 tablespoon whole-grain mustard
2 teaspoons dry white wine
2 garlic cloves
minced
1 teaspoon finely chopped thyme
Instructions
Make the Ragu In a deep skillet, add the oil, shallot and garlic and cook over moderate heat, stirring, until softened, 3 minutes.
Add the tomatoes, thyme and a pinch each of salt and pepper.
Cook, stirring, until the tomatoes start to break down, 4 minutes.
Add the beans and stock and simmer until the beans are hot, 2 minutes.
Add the escarole, prosciutto and lemon zest and cook over moderately high heat, stirring, until the escarole is just wilted, 4 minutes; if the bean ragu is too thick, add a little water.
Prepare the Salmon Preheat the broiler.
Line a rimmed baking sheet with foil and brush it with oil.
Season the fish with salt and pepper and set on the baking sheet.
In a bowl, whisk both mustards with the wine, 2 teaspoons of oil, the garlic, thyme and a pinch each of salt and pepper.
Broil the salmon fillets 6 inches from the heat for 2 minutes, until the top just starts to brown.
Spoon the mustard on the salmon and broil for 5 minutes, until the fish is nearly cooked through and the top is browned.
Spoon the bean ragu into bowls, top with the fish and serve.