Can I use dried spices instead of achiote paste?

You can substitute achiote paste with a mix of smoked paprika, cumin, and garlic powder, though the authentic roasted fish al pastor flavor will be slightly different.

How do I know my fish is done?

The fish is fully cooked when it reaches an internal temperature of 145 degrees Fahrenheit and flakes easily with a fork.

Can I prepare this ahead of time?

You can marinate the fish up to four hours before cooking, but avoid leaving it in the acidic marinade too long to prevent texture changes.

Is this recipe suitable for kids?

This roasted fish al pastor recipe is mild and kid-friendly, especially if you serve it inside soft tortillas with mild toppings.

What if I cannot find pineapple?

Mango can serve as a sweet substitute in this roasted fish al pastor recipe, providing a similar tropical acidity.

Can I grill it instead of roasting?

Grilling provides a slightly char-grilled flavor that works beautifully with the spices in this roasted fish al pastor recipe.

How do I keep the fish from sticking?

Use high-quality parchment paper or a well-oiled nonstick baking sheet to ensure the fish remains intact.

Can I double the recipe?

You can double this roasted fish al pastor recipe for large gatherings, provided you use multiple baking sheets to allow for proper heat circulation.

Is this meal gluten-free?

This dish is naturally gluten-free, provided you check that your achiote paste is labeled gluten-free by the manufacturer.

What is the best way to reheat it?

Reheat in an oven at 300 degrees until just warmed through to keep the fish from becoming rubbery.

Easy Roasted Fish al Pastor Recipe for Family Dinners 2026

Ingredients

Scale

1.5 lbs White Fish Fillets (Tilapia, Cod, or Mahi-Mahi)
3 tbsp Achiote Paste (Essential for the signature red color)
1 cup Fresh Pineapple (Diced into small cubes)
2 tbsp Lime Juice (Freshly squeezed is far superior)
1/2 cup Onion (Finely diced red or white onion)
2 tbsp Olive Oil (Provides moisture for the marinade)
Fresh Cilantro (For garnish)

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Instructions

Whisk the achiote paste, lime juice, and olive oil in a small bowl until completely smooth.
Coat the fish fillets generously with the marinade on both sides using a silicone brush.
Let the fish rest for at least 15 minutes to allow the spices to infuse the flesh properly.
Preheat your oven to 400 degrees Fahrenheit while you finish marinating the fish components.
Arrange the fish fillets on a parchment-lined baking sheet to prevent any sticking during cooking.
Scatter the fresh pineapple chunks and diced onions evenly around the fish fillets for maximum flavor distribution.
Bake the dish for 12 to 15 minutes or until the fish reaches an internal temperature of 145 degrees.
Remove the tray carefully and garnish with fresh cilantro before serving your delicious Roasted Fish al Pastor recipe.

Notes

Pat your fish dry with paper towels before marinating so the paste adheres strongly to the surface. Avoid overcooking the fish by pulling it from the oven as soon as the edges start to flake easily. Use fresh pineapple if possible because the enzymes contribute significantly to the authentic flavor of the Roasted Fish al Pastor recipe. Add a sprinkle of smoked paprika to the marinade if you want an extra layer of earthiness beyond the achiote. Serve with warm corn tortillas to absorb the juices released by the pineapple and onions during the roasting process.

Author: Amelie Harper
Prep Time: 20 Mins
Cook Time: 15 Mins
Category: Main Course
Method: Roasting
Cuisine: Mexican-Inspired
Diet: Pescatarian

Nutrition

Serving Size: 1 serving
Calories: 280
Sugar: 6g
Sodium: 450mg
Fat: 8g
Saturated Fat: 1.5g
Unsaturated Fat: 6.5g
Trans Fat: 0g
Carbohydrates: 12g
Fiber: 2g
Protein: 32g
Cholesterol: 65mg