Bright, fresh, and satisfying, this Summer Eggplant Sandwich celebrates seasonal vegetables in every bite.
Packed with fiber-rich eggplant, heart-healthy avocado, and protein from feta, it’s a nutritious, plant-forward meal.
Quick to prepare and endlessly customizable, it’s perfect for lunch, light dinner, or meal prep.
Low in saturated fat yet full of flavor, it’s an everyday wholesome delight.

Summertime Eggplant Sandwiches
Equipment
- 1 Medium Bowl
- 1 Fork
- 1 knife
- 1 cutting board
- 1 baking sheet (or air fryer basket)
- 1 Toaster or Oven
Ingredients
Eggplant Rounds
- 1 small eggplant 9–10 oz
- 1 –2 tbsp oil avocado or olive oil
- Salt to taste
- Black pepper to taste
Lemon Avocado Mash
- 1 small avocado peeled and pitted
- 2 tbsp crumbled feta cheese
- ½ tsp lemon zest
- 2 tsp lemon juice
- 1/8 tsp red pepper flakes optional
- Salt to taste
- Black pepper to taste
Sandwich Assembly
- 4 slices whole grain bread
- ½ cup jarred roasted red peppers chopped
- 8 cucumber slices
- 8 red onion slices
- 3 lettuce leaves torn
- Fresh basil leaves for garnish
Instructions
- Prep the Eggplant: Start by washing the eggplant thoroughly. Use a fork to prick the skin several times or peel a few strips lengthwise if preferred. Slice the eggplant into ¼–½ inch thick rounds, aiming for even thickness to ensure consistent cooking. Lightly brush or spray both sides with oil, then season with salt and freshly ground black pepper to enhance flavor.
- Cook the Eggplant: Broiler method: Arrange the eggplant slices in a single layer on a baking sheet. Broil on medium-high heat, turning once, until the slices are fork-tender and lightly browned, about 4–6 minutes per side. Check frequently, starting around 3 minutes per side, as broiler strength may vary.
- Air fryer method: Preheat your air fryer to 400°F (200°C). Place the slices in a single layer in the basket. Cook for 5–6 minutes per side until golden, tender, and slightly crisp on the edges.
- Make the Avocado Spread: In a medium bowl, mash the avocado with a fork until it reaches a chunky, creamy texture. Stir in the crumbled feta, lemon zest, and lemon juice. Add red pepper flakes if you like a touch of heat. Taste and season with salt and pepper, adjusting the flavors to your preference.
- Assemble the Sandwiches: Toast the bread slices until golden. Spread a generous layer of the avocado-feta mixture on each slice. Layer the sandwiches with lettuce, cucumber slices, roasted eggplant, red peppers, red onion, and fresh basil. Top with the remaining bread slices spread with more avocado mixture. Press gently and serve immediately for maximum freshness.
- Optional Variations: Feel free to swap ingredients to suit your taste: add tofu or hummus for extra protein, use arugula or spinach instead of lettuce, or experiment with wraps and pitas. A spoonful of pesto or tzatziki adds extra flavor, making this sandwich highly adaptable.
- Storage and Reheating: Store leftover roasted eggplant in an airtight container in the fridge for up to 4 days. To reheat, place on an ungreased baking sheet or toaster oven tray and warm at 350°F (325°F convection) for 8–12 minutes. There’s no need to preheat when reheating; this keeps the eggplant tender without drying it out.
Notes
- Choose small to medium eggplants for tender, evenly cooked slices.
- Slice eggplant consistently, ¼–½ inch thick, to ensure uniform cooking.
- Broiler times may vary; check eggplant early to avoid burning.
- Leftover roasted eggplant can be stored for up to 4 days.
- Customize the sandwich with seasonal vegetables, wraps, or favorite spreads.
- Use ripe, creamy avocado for a smooth and flavorful spread.
- Toast bread just before assembling to maintain crisp texture.
Chef’s Secrets for Maximum Flavor
To elevate this sandwich, start with high-quality, fresh ingredients.
Selecting a firm, small eggplant ensures tender slices without excessive moisture.
When making the avocado-feta spread, leave it slightly chunky to retain texture—this adds a fresh, rustic feel.
Layering vegetables thoughtfully, with crisp lettuce beneath softer roasted ingredients, prevents sogginess and enhances bite.
Experimenting with herbs like basil or arugula adds an aromatic lift, while optional spices such as red pepper flakes bring a subtle, lively heat.
Finally, using whole-grain or multigrain bread not only enhances nutrition but provides the perfect structural base for this hearty sandwich.
Serving Suggestions for Enjoyable Meals
This sandwich pairs beautifully with a light side salad, crunchy vegetable sticks, or a cup of soup for a complete, satisfying meal.
Serve immediately after assembling to enjoy the contrast of crisp vegetables and tender eggplant.
For a picnic or lunchbox option, wrap tightly in parchment paper or a reusable container.
Garnishing with extra fresh herbs or a drizzle of olive oil just before serving can boost visual appeal and flavor.
The versatility allows it to fit breakfast, lunch, or dinner menus effortlessly.
Storage Tips for Sandwich Ingredients
Roasted eggplant slices store best in an airtight container in the refrigerator for up to four days.
Avoid stacking while still hot; allow them to cool slightly to prevent condensation.
The avocado spread is best prepared fresh, but can be stored for up to a day with plastic wrap pressed directly on the surface to prevent browning.
Bread should remain separate until assembly to maintain crispness.
When reheating, use a toaster oven or air fryer at moderate heat to restore warmth without compromising texture.
Frequently Asked Questions
1. Can I use other vegetables instead of eggplant?
Yes! Zucchini, bell peppers, or portobello mushrooms work well roasted and layered in this sandwich.
Each brings a slightly different texture and flavor but maintains the fresh, summery appeal.
2. Is this recipe vegan-friendly?
To make it vegan, simply omit the feta or replace it with a plant-based cheese alternative.
The avocado provides creaminess and healthy fats, keeping the sandwich satisfying.
3. Can I prepare this sandwich ahead of time?
You can prep all components individually in advance.
Store roasted eggplant, sliced vegetables, and avocado mash separately, then assemble just before serving to prevent soggy bread.
4. How can I make this sandwich more protein-rich?
Add grilled tofu, tempeh, or a smear of hummus to boost protein content.
Nuts or seeds sprinkled over the avocado spread can also enhance both nutrition and texture.
5. What bread works best for this sandwich?
Whole-grain, multigrain, or sourdough bread is ideal.
These breads offer structure, absorb flavors well, and provide extra fiber, balancing the richness of the avocado-feta spread.
Avoid overly soft breads that may become soggy quickly.