1-First Step: Make the sauce Start by mixing the creamy sauce in a small bowl. Add 0.5 cup sour cream, 0.33 cup mayonnaise, 2 tablespoons lime juice, 1 teaspoon garlic powder, and 1 teaspoon sriracha. Stir until smooth and taste it. If you want more heat, add a little more sriracha, a small spoon at a time. Cover the bowl and place it in the refrigerator while you cook the fish.

2-Second Step: Prep the toppings Slice the avocados, dice the red onion, shred or thinly slice the purple cabbage, grate the Cotija cheese, and chop the cilantro. If you are using tomatoes, dice those too. Arrange everything in small bowls so building the tacos feels quick and easy later. Cut the lime into wedges and set them aside for serving.

3-Third Step: Season the fish Pat the tilapia dry with paper towels so it browns nicely in the pan. In a small bowl, mix 0.5 teaspoon cumin, 0.5 teaspoon cayenne pepper, 1 teaspoon salt, and 0.25 teaspoon black pepper. Sprinkle the seasoning evenly over both sides of the fish. This simple seasoning gives the fish a warm, zesty flavor that works beautifully with the creamy sauce and fresh toppings.

4-Fourth Step: Cook the fish Set a large skillet over medium heat and add 1 tablespoon olive oil and 1 tablespoon unsalted butter. Once the butter melts and the pan is hot, place the tilapia in a single layer. Cook for about 3 to 4 minutes on the first side, then carefully flip and cook for another 2 to 3 minutes. The fish is ready when it turns opaque and flakes easily with a fork. Avoid overcooking, since tilapia cooks quickly and stays best when tender.

5-Fifth Step: Warm the tortillas While the fish cooks, warm the 24 small white corn tortillas. You can heat them in a dry skillet for about 20 to 30 seconds per side, or wrap a stack in foil and warm them in the oven. A warm tortilla makes the tacos easier to fold and gives them that soft, fresh-made feel. If you have a gas burner, you can also char them lightly for extra flavor.

6-Sixth Step: Assemble the tacos Break the cooked fish into small pieces using a fork. Place a portion of fish in each tortilla, then add cabbage, avocado, onion, tomatoes if using, cilantro, and Cotija cheese. Spoon the sauce over the top or serve it on the side for dipping. Finish each taco with a squeeze of lime for a fresh, lively taste.

7-Final Step: Serve right away Serve the tacos while the fish is warm and the tortillas are soft. Add extra lime wedges on the side and pass the remaining sauce at the table. These tacos are best fresh, when the textures are crisp, creamy, and juicy all at once. If you are planning a full meal, a simple side and a sweet finish like strawberry shortcake can make dinner feel extra special.