Oven-Baked Cod, Lean or Better

• 2 cod fillets (about 170g / 6 oz each raw; H-E-B Wild Caught Alaska Cod, 2-ct bag)
• 1/2 tsp kosher salt (for the dry-brine)
• 1/4 tsp MSG (Ac'cent or any straight monosodium glutamate)
• 1/2 tsp paprika
• 1/2 tsp garlic powder
• 1/4 tsp black pepper
• 1 tsp Dijon mustard (Better mode only, optional)
• 1/2 lemon (zest and juice, applied after cooking)
• fresh dill or parsley, chopped, to finish (optional)

Method

1. 1
   Pick your mode

   Fast/lean mode: cook from frozen, minimal prep, accept slightly muted flavor. This is the rest-day protein-banking version. Better mode: thaw and dry-brine first, for when the fish is the centerpiece. The steps below cover Better mode; the Fast-mode shortcuts are called out inline.

2. 2
   Thaw (Better mode)

   Move fillets from freezer to fridge the night before, or cold-water bath ~30 min day-of until pliable. A real dry-brine needs thawed flesh, not surface ice. FAST MODE: skip this entirely and cook from frozen; you can't dry-brine frozen fish well anyway, so don't bother trying.

3. 3
   Dry-brine (Better mode)

   Pat fillets dry. Salt both sides with the kosher salt and let sit uncovered 15-20 min. The salt pulls moisture, then reabsorbs, seasoning the interior and firming the flesh so it weeps less albumin. This is the single biggest flavor lever here and costs no macros. FAST MODE: just salt at the door and go.

4. 4
   Season

   Pat dry again. Mix MSG, paprika, garlic powder, and pepper; coat both sides. MSG amplifies savoriness and makes the fish taste more of itself - it's the zero-fat way to fix blandness, use it like a partner to salt, not a replacement. Better mode option: smear a thin layer of Dijon on top first, then the spice mix - the mustard adds tang plus a little emulsified fat that helps the dry spices bloom (oven-no-oil can't do that on its own) and holds the seasoning to the surface. Do NOT add lemon juice here.

5. 5
   Bake

   375-400F on parchment. Thin fillets overcook fast, so lower is safer. No oil keeps it fat-free for rest days. Do not trust a timer - cod is done at 130-135F internal and goes chalky above ~140F. Start checking at ~10 min; a not-super-thick fillet is usually done 12-15 min from thawed, longer from frozen. Pull the moment it flakes clean and hits temp. An instant-read thermometer is the highest-value tool for this - it kills both the overcook and the albumin weep.

6. 6
   Finish with acid

   Off the heat, squeeze fresh lemon over the fillets and add zest. Lemon juice baked IN goes dull and bitter - the brightness you want cooks off, which is why acid added during baking never fixes blandness. Add fresh dill or parsley now too if using. This is where the dish wakes up.

7. 7
   Tilapia adjustments

   Same method transfers, but the numbers don't. Tilapia is thinner and softer, so: (1) it overcooks worse - lean toward 375F and a wider margin; (2) start checking absurdly early, ~7-8 min, the gap between perfect and rubber is a couple minutes; (3) same 130-135F pull target but it gets there far faster with less mass to buffer; (4) it's blander than cod to begin with, so season MORE assertively - this is the fish that most wants the MSG, Dijon, acid, and herbs. Thaw and dry-brine transfer unchanged and arguably help tilapia more since it's often frozen wetter.