3 pack haddock Recipes

olive oil, divided, garlic cloves, sliced, anchovy fillets packed in oil, drained, crushed red pepper flakes, whole peeled tomatoes and their juices, coarsely pureed, halved, pitted oil-cured black olives, kosher salt plus more, freshly ground black pepper plus more, fingerling potatoes, halved, shallots, peeled , leaving root end intact, quartered, haddock or halibut fillets, cut into 1 1/2 cubes, halved caper berries or 1 tbsp drained capers, rinsed, chopped flat-leaf parsley

heavy duty aluminum foil, black pepper, dijon mustard, garlic, minced, grape tomatoes, halved, haddock, cut into (4) 1/2 thick pieces, olive oil, shallot, chopped, spinach, trimmed, white wine vinegar