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Sheet Pan Roasted Ratatouille

This sheet pan ratatouille features a medley of eggplant, zucchini, bell peppers, and onion roasted until caramelized and tender. The roasting process intensifies their natural sweetness and smoky flavor, resulting in a vibrant, layered vegetable dish with a slightly charred, crispy exterior and soft interior. It’s a fuss-free, visually stunning way to enjoy a healthy, veggie-packed meal.
Print Recipe
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 4
Course: Main Course
Cuisine: French
Calories: 180
Ingredients Equipment Method Notes

Ingredients
  

  • 1 large eggplant shiny, firm skin
  • 2 medium zucchini preferably evenly sized
  • 3 bell peppers use a mix of colors for vibrancy
  • 1 large onion yellow or red, sliced thin
  • 4 cloves garlic minced fresh garlic
  • 2 tablespoons olive oil extra virgin preferred
  • 1 teaspoon dried thyme or herbs de Provence
  • to taste salt and pepper

Equipment

  • Large rimmed baking sheet
  • Sharp knife
  • Spatula or tongs
  • Measuring spoons

Method
 

  1. Preheat your oven to 200°C (390°F). Line your large rimmed baking sheet with parchment paper or lightly oil it to prevent sticking.
  2. Wash and dry the eggplant, then cut off the stem and slice it into ¼-inch thick rounds. Repeat with zucchini, cutting into similar thickness for even roasting.
  3. Core the bell peppers, then slice them into strips roughly ¼-inch wide. Thinly slice the onion into rings or half-moons.
  4. Place all the chopped vegetables in a large mixing bowl. Add minced garlic, olive oil, dried thyme, and a generous pinch of salt and pepper. Toss everything together until well coated and evenly seasoned.
  5. Spread the vegetables out in a single layer on the prepared baking sheet, giving each piece space to roast properly. You might need to use two sheets if necessary.
  6. Place the sheet in the oven and roast for 30 minutes. During the first 15 minutes, hear the vegetables start to sizzle and smell their sweet, roasted aroma.
  7. After 15 minutes, use a spatula or tongs to gently turn or stir the vegetables. This helps promote even caramelization and prevents sticking.
  8. Continue roasting for another 15 minutes until the edges are nicely charred and crispy, and the vegetables are tender when pierced with a fork. The aroma should be rich with smoky, sweet notes.
  9. Remove from the oven and let the vegetables sit for a few minutes. Serve warm, garnished with fresh herbs or a drizzle of balsamic vinegar if desired.

Notes

For extra depth of flavor, sprinkle with fresh basil or parsley just before serving. This dish pairs beautifully with crusty bread or over grains like rice or quinoa.