Place all of the vegetables, except tomatoes, in large bowl with 3 tablespoons olive oil; toss gently to coat. Sprinkle vegetables with 1 tablespoon Basque Rub and sea salt; toss gently to coat. Set aside. Place 3/4 cup of the tomatoes in blender container; cover. Blend until smooth. Set aside.
Heat plancha (flat cast-iron griddle) on grill over medium-high heat. Brush plancha lightly with additional olive oil. Place seasoned vegetables on the plancha. Cook 5 to 6 minutes or until nicely charred and tender-crisp, turning occasionally. Add the pureed tomatoes and remaining diced tomatoes to the vegetables on the plancha; cook and stir until heated through. Remove vegetables from plancha. Keep warm. Reduce heat to medium.
Season both sides of fish with remaining 1 tablespoon Basque Rub. Brush plancha lightly with more oil. Place fish on plancha. Cook fish on both sides until fish is lightly charred and flakes easily with a fork, about 10 minutes per inch of thickness.
Serve fish with plancha grilled vegetables. Garnish with parsley.
Ingredients
2 tbsp Basque-Inspired Rub with Espelette Pepper, divided
2 cups eggplant, diced 1/2 in
3 tbsp oil, olive, extra virgin, plus additional for brushing plancha