Preheat the oven to 450 degrees F. Put a baking pan on the middle rack. Heat a stove top grill over high heat.

Prepare the eggplant while the oven and grill are heating. Cut a lengthwise strip off both sides of the eggplant to expose the flesh. Cut the eggplant into 4 thick slices parallel to the cut sides.

Combine the almond oil with 1 teaspoon of the sesame oil in a small bowl. Brush the eggplant slices very lightly on both sides with about half of the oil mixture. Arrange them in a single layer on a plate or tray. Sprinkle both sides of the eggplant slices with the salt.

Put the eggplant on the hot grill and cook for about 5 minutes on each side. Transfer the eggplant to the baking pan in the oven. Keep the grill hot.

To make the sauce, combine the tomato puree, hoisin sauce, agave nectar, and remaining teaspoon of sesame oil in a small saucepan over medium heat. Toss the seitan slices with the remaining oil mixture. Put them on the grill and cook for about 3 minutes on each side.
Toast the bread slices and put one slice on each plate.

Put an eggplant slice on each piece of toast. Divide the hot seitan and sauce among the 4 slices, covering the eggplant. Sprinkle with the scallions and sesame seeds. Serve at once.