First Step: Prepare the Eggplant. Peel and slice the eggplant into uniform slices about ½ cm thick. Place the slices in a bowl of slightly salted water and soak for 30 minutes. This removes bitterness and excess moisture, improving texture and flavor. After soaking, rinse and pat the slices dry thoroughly with paper towels.

Second Step: Make and Apply the Marinade. In a small bowl, whisk together 1 tablespoon olive oil, 1 tablespoon soy or tamari sauce, 1 teaspoon agave or maple syrup, 1 teaspoon smoked paprika, ¼ teaspoon salt, and ¼ teaspoon black pepper. Optionally add a few drops of liquid smoke for a more intense smoky flavor. Brush this marinade evenly onto both sides of each eggplant slice to infuse them with savory, smoky notes.

Third Step: Cook the Eggplant. Preheat your oven to 360°F (180°C). Arrange the marinated eggplant slices on a baking sheet lined with parchment paper. Bake for about 20 minutes until the slices become tender and slightly crispy at the edges. Alternatively, shallow fry the slices in a pan with a little oil until golden, then drain on paper towels. Both methods develop rich smoky flavors and pleasing textures.

Fourth Step: Prepare the Bread and Spread. Slice the ciabatta buns horizontally and spread 2 tablespoons of vegan mayonnaise on the bottom halves. This creamy layer balances the smoky eggplant and adds moisture to the sandwich.

Fifth Step: Assemble the Sandwich. Layer the cooked eggplant slices over the mayonnaise-spread bread. Add slices of fresh tomato and cucumber on top of the eggplant. Season lightly with salt and pepper to enhance the fresh flavors. Finish by topping with a generous handful of peppery arugula leaves for brightness and crunch.

Sixth Step: Toast and Serve. Wrap the assembled sandwiches in foil and place in a grill, oven, or sandwich press. Toast for 5–7 minutes until warmed through and the bread is slightly crisp. This step melds flavors and makes the sandwich portable ideal for lunches or picnics. Slice in halves before serving.