Sometimes a can of sardines comes in very handy and this dish is a great way to work more high-omega 3 fish into your diet. It is a classic Provençal gratin, traditionally made with fresh sardines but just as good made with the skinless, boneless olive-oil packed sardines I buy at Trader Joe’s. You are getting lots of calcium, Omega-3 fatty acids and iron from both the sardines and the spinach.
03Heat the olive oil (not the oil from the sardines) in the skillet over medium heat and add the onion and a pinch of salt. Cook, stirring, until tender, 5 to 8 minutes. Add a generous pinch of salt, stir in the garlic and thyme and cook, stirring, until fragrant, 30 seconds to a minute, then add the chopped wilted spinach, flour, and salt and pepper to taste. Stir together for 1 minute, until everything is blended. Add the milk and cooked rice and stir together for about 1 minute, until you no longer see liquid in the pan. Remove from the heat. Taste and adjust salt and pepper.
04Spread half the rice and spinach in the bottom of the baking dish. Top with the sardine fillets in one layer. Drizzle a tablespoon of the oil from the cans over the sardines, then top with the remaining rice and spinach in an even layer. Sprinkle on the breadcrumbs and drizzle on another tablespoon of the oil from the sardine cans. Place in the oven and bake 15 minutes, until sizzling. Serve hot or warm.