1-First Step: Prep the baking sheet and fish Start by lining a large baking sheet with parchment paper or a silicone liner. This keeps the fish from sticking and makes cleanup much easier. Pat the tilapia dry with paper towels so the seasoning can cling better and the fish bakes nicely. Next, place the tilapia on the prepared baking sheet in a single layer. Make sure the pieces are not crowded, so they cook evenly. If you are cooking for kids or anyone sensitive to spice, you can reduce the cayenne a little, though the recipe as written gives a nice gentle kick.

2-Second Step: Season the fish In a small bowl, mix together 1/2 teaspoon cumin, 1/2 teaspoon cayenne pepper, 1 teaspoon salt, and 1/4 teaspoon black pepper. Sprinkle the seasoning evenly over both sides of the tilapia. Use your hands or the back of a spoon to help it spread without tearing the fish. Drizzle the fish lightly with 1 tablespoon olive oil, then dot the top with 1 tablespoon unsalted butter. This helps the fish stay moist while it bakes and adds a richer flavor. The butter also gives the edges a little extra color.

3-Third Step: Bake the fish Heat the oven to 375°F. Bake the fish for 20 to 25 minutes, depending on the thickness of the fillets. Tilapia cooks quickly, so check it near the end. The fish should be opaque and flake easily with a fork when it is done. If you want browned edges, broil the fish for 3 to 5 minutes at the end. Keep a close eye on it while broiling, since fish can go from nicely browned to overdone fast. If you are making a fish tacos recipe for a smaller group, you can easily halve the batch and still follow the same timing.

4-Fourth Step: Make the fish taco sauce While the fish bakes, whisk together 1/2 cup sour cream, 1/3 cup mayonnaise, 2 tablespoons lime juice, 1 teaspoon garlic powder, and 1 teaspoon sriracha sauce in a small bowl. Stir until the sauce is smooth and creamy. Taste it and add a little more sriracha if you want extra heat. This is the best fish taco sauce for anyone who loves a cool, tangy, slightly spicy topping. It balances the seasoning on the fish and works well with crunchy cabbage and fresh vegetables. If you want a bigger batch, double the sauce so people can add plenty to each taco. The sauce is one of the biggest reasons this fish tacos recipe tastes so satisfying. A good taco sauce ties the whole plate together.

5-Fifth Step: Prep the toppings While the fish and sauce are coming together, prep the toppings. Thinly shred 1/2 small purple cabbage, dice the 2 roma tomatoes, dice the 1/2 red onion, slice the 2 avocados, and remove the longer stems from the 1/2 bunch cilantro. Crumble or measure out the 4 ounces of grated cotija cheese, and cut the lime into 8 wedges. Fresh toppings are a big part of what makes fish tacos so good. The cabbage adds crunch, the avocado adds creaminess, and the lime wakes up every bite. If you want to save time on a busy night, you can prep the toppings earlier in the day and keep them chilled until dinner.

6-Sixth Step: Warm the tortillas Toast the 24 small white corn tortillas on a dry skillet or griddle over medium-high heat. Heat each tortilla for about 20 to 30 seconds per side, just until warm and lightly toasted. This step may seem small, but it makes a big difference in flavor and texture. Warm tortillas are more flexible and less likely to tear when you build the tacos. They also bring out the natural corn flavor. If you are serving a crowd, wrap the warmed tortillas in a clean towel to keep them soft while you finish the rest.

7-Final Step: Assemble and serve Break the baked fish into pieces and place it in the warm tortillas. Add shredded cabbage, tomatoes, onion, avocado, cilantro, and cotija cheese. Spoon the sauce over the top, then finish with a squeeze of lime. Serve the tacos right away while the tortillas are warm and the fish is fresh from the oven. This fish tacos recipe is especially good when paired with a simple side like rice, beans, or a bright salad. For more easy dessert ideas after taco night, you might like this easy berry trifle recipe or fruit pizza for a fun family treat.