In a large skillet, heat olive oil and butter over medium heat, until butter is melted.
Toss Tilapia fillet pieces with Creole seasoning.
Add to the skillet and cook over medium heat for 5 minutes, stirring occasionally. Sprinkle with salt.
While fish is cooking, toss chopped cabbage and onion with Marzetti Simply Dressed Balsamic Salad Dressing. Once combined, add to the skillet with the fish and continue stirring over medium heat until cabbage becomes tender and fish is completely cooked through (approximately 5 minutes).
Remove from heat.
Assemble the tortillas with shredded cheese, fish and cabbage mixture, and topped with diced tomatoes. Drizzle with additional Marzetti Simply Dressed Balsamic Salad Dressing, if desired.