Baked Cod with Chickpeas, Tomatoes and Olives

Why this recipe works for weight loss

Most weight-loss fish dinners are a fillet and a salad, and they leave you standing at the fridge at nine o'clock. This one doesn't, because it solves protein and fiber in the same pan.

Protein: 41 g per serving from the cod. Cod is about 17.8 g of protein per 100 g raw against 0.7 g of fat, which is why a 6-ounce piece costs you barely 140 calories. Protein is the macronutrient that best protects lean mass and appetite control in a calorie deficit (Leidy et al., 2015).

Fiber and volume: 11 g of fiber per serving, nearly all of it from the chickpeas. Pulses have been shown in pooled feeding trials to increase fullness by about 31% compared with matched meals without them (Li et al., 2014), and higher fiber intakes track with lower body weight over time (Howarth et al., 2001). Two cans is more than looks reasonable in the pan — that's the point.

Fat where it counts: two tablespoons of olive oil and a third of a cup of olives, roughly 14 g of fat per serving, most of it monounsaturated. It carries flavor and it keeps the chickpeas from tasting like a diet. Nothing here is lightened by removing it.

On the fish itself: the American Heart Association's advice is two servings of fish a week, and lean white fish like cod counts even though it carries little omega-3 — the benefit in the Mediterranean pattern comes partly from what fish replaces on the plate (Mozaffarian & Rimm, 2006).

Tips from our kitchen

• Rinse the chickpeas properly. Thirty seconds under cold running water removes roughly 40% of the sodium that came in the can (Duyff et al., 2011), and it takes away the tinny liquid that would otherwise dull the tomatoes. Even so this is a salty plate — 840 mg of sodium per serving, most of it from the olives, capers and beans. If you're watching it, use no-salt-added chickpeas and cut the olives to a quarter cup.
• Buy thick pieces, not tail ends. A 1-inch center-cut loin cooks in the time the sauce needs; a thin tail end is dry before the chickpeas are hot. If your fillets are uneven, tuck the thin end under itself to make an even block.
• Don't stir once the fish is in. Cod holds together only if you leave it alone — move it once, with a wide spatula, when it goes on the plate.
• A dry pan is a failed pan. The chickpeas drink more liquid than you expect in the oven. If the base looks thick before the fish goes in, add ¼ cup of water; you want a spoonable juice at the end, not a paste.

Variations

• Other white fish: haddock, hake, pollock and halibut all work with no change to the method. Thicker halibut needs 15–18 minutes.
• Add greens: stir 4 oz (110 g) of baby spinach or chopped escarole into the base before the fish goes in. It adds about 6 calories and 0.6 g of fiber per serving.
• Out of tomato season: use a 14-oz can of whole peeled tomatoes, crushed by hand, and simmer 10 minutes instead of 8.
• For a training day or a bigger appetite: raise the cod to 2 lb (900 g) — about 490 calories and 51 g of protein per serving — or serve it with a thick slice of grilled bread rubbed with garlic.

Storage & meal prep

Best eaten the day it's made. Leftovers keep 2 days in an airtight container in the refrigerator; reheat covered in a 300°F (150°C) oven for 10 minutes rather than in the microwave, which turns cod rubbery. The chickpea base on its own keeps 4 days and freezes for 2 months — make it ahead and you're 15 minutes from dinner.