Eggplant gratin is a layered dish that features roasted slices of eggplant baked in a rich tomato and garlic sauce, topped with creamy cheese and finished under the broiler until golden and bubbling. Ina’s version uses Parmesan and Gruyère for deep flavor and a melty, crispy top.
2 medium eggplants, peeled and sliced ½ inch thick
¼ cup olive oil
Kosher salt and freshly ground black pepper
1 yellow onion, chopped
3 garlic cloves, minced
1 (28-ounce) can crushed tomatoes
1 tablespoon tomato paste
½ teaspoon dried oregano
¼ teaspoon red pepper flakes (optional)
½ cup grated Parmesan cheese
1½ cups grated Gruyère cheese
2 tablespoons chopped fresh basil or parsley, for garnish
Preheat oven to 400°F (200°C). Arrange the eggplant slices on baking sheets, brush both sides with olive oil, and sprinkle with salt and pepper. Roast for 20–25 minutes, turning once, until golden and tender.
In a saucepan over medium heat, sauté the chopped onion in a tablespoon of olive oil for 5–6 minutes. Add garlic and cook for 1 minute. Stir in crushed tomatoes, tomato paste, oregano, red pepper flakes, salt, and pepper. Simmer for 15–20 minutes until thickened.
In a 9×13-inch baking dish, spread a thin layer of tomato sauce. Add a layer of roasted eggplant slices. Spoon more sauce over the eggplant, then sprinkle with Parmesan and Gruyère. Repeat until all ingredients are used, finishing with a generous layer of cheese on top.
Lower oven temperature to 375°F (190°C). Bake the gratin uncovered for 25–30 minutes until bubbling and golden. Broil for 1–2 minutes at the end if needed for extra browning.
Let the dish rest for 10 minutes before serving. Garnish with chopped fresh basil or parsley for a burst of color and freshness.
Find it online: https://inagartencooks.com/ina-garten-eggplant-gratin/