This 6-ingredient oven baked swai is the kind of weeknight dinner that makes you feel like you pulled off a little magic trick. You start with completely frozen raw swai fillets, add just five everyday pantry items right in the roasting pan, and let the oven do the rest. The fish comes out tender, flavorful, and just a little bit buttery around the edges—good enough that you’ll swear you could serve it to company, even though it only took a few minutes of hands-on time.
This swai is lovely with simple sides that soak up the buttery lemon juices from the pan. Serve it over steamed white or brown rice, mashed potatoes, or buttered egg noodles, and spoon the pan sauce over the top. Add a bright vegetable on the side, like roasted green beans, steamed broccoli, or a crisp salad with a tangy vinaigrette. Warm dinner rolls or crusty bread are also great for mopping up every last bit of the flavorful juices.
6-Ingredient Oven Baked Swai (From Frozen)Servings: 4
Ingredients
4 frozen raw swai fillets (about 4–6 ounces each, kept completely frozen)
3 tablespoons unsalted butter, cut into small pieces
2 tablespoons olive oil
1 1/2 teaspoons garlic powder
1 teaspoon salt (or to taste)
1/2 teaspoon black pepper
1 medium lemon, sliced into thin rounds
Directions
Preheat your oven to 400°F (200°C). Do not thaw the swai; you want the fillets to go into the pan completely frozen.
Lightly grease an oven-safe roasting pan with a bit of the olive oil, or line it with foil for easier cleanup. Choose a pan large enough so the fillets can sit in a single layer without overlapping too much.
Place the completely frozen raw swai fillets in the roasting pan in a single layer. If they are stuck together, gently run them under cold water for a few seconds and separate with a butter knife, then return them to the pan.
Drizzle the remaining olive oil evenly over the tops of the frozen fillets. Scatter the small pieces of butter around and on top of the fish so they can melt and baste the fillets as they bake.
Sprinkle the garlic powder, salt, and black pepper evenly over the frozen fillets. Don’t worry if some seasoning falls into the pan—that will help flavor the juices for spooning over later.
Lay the lemon slices over and around the swai fillets. They don’t have to be perfect; just tuck them in so every fillet gets a bit of lemon flavor as it cooks.
Cover the roasting pan tightly with foil. Bake in the preheated oven for 20 minutes to let the swai start to gently steam and thaw in its own juices.
After 20 minutes, carefully remove the foil (watch out for steam). Spoon some of the buttery pan juices over the tops of the fillets, then return the pan to the oven, uncovered.
Continue baking, uncovered, for another 10–15 minutes, or until the swai is opaque all the way through and flakes easily with a fork. Thinner fillets may be done closer to 10 minutes; thicker ones may need the full 15. The internal temperature should reach 145°F (63°C).
Once done, taste a bit of the pan juices and adjust the seasoning with a pinch more salt or pepper if needed. Let the fish rest in the pan for 3–5 minutes, then serve the fillets hot, spooning plenty of the buttery lemon sauce from the roasting pan over each piece.
Variations & Tips
For kids or picky eaters, skip the lemon slices on top of their portions and just use the buttery juices; you can also reduce the garlic powder slightly for a milder flavor. If you like a little color, switch the garlic powder to a mix of 1 teaspoon garlic powder and 1/2 teaspoon paprika for a pretty, lightly smoky finish. For an herby twist using more everyday items, sprinkle 1 teaspoon dried parsley or Italian seasoning over the fillets along with the garlic powder. To make it slightly lighter, reduce the butter to 2 tablespoons and increase the olive oil to 3 tablespoons. If your family enjoys a bit of crunch, uncover the pan for the last 5 minutes and turn the broiler on low, watching closely so the edges of the fish just start to brown. You can also use this same method with other mild white fish fillets (like tilapia or pollock), adjusting the time slightly if they’re thinner or thicker than swai.
