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Homemade Herbed Zucchini & Tomato Casserole Gratin dish photo
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Herbed Zucchini & Tomato Casserole Gratin

This Herbed Zucchini & Tomato Casserole Gratin is a flavorful, cheesy, and herb-infused summer vegetable delight baked to golden perfection.
Prep Time20 minutes
Cook Time30 minutes
Total Time50 minutes
Course: Main Course, Side Dish
Cuisine: Mediterranean
Keyword: Baked, Cheesy, Easy, Summer, Vegetarian
Servings: 4 servings

Ingredients

  • 4 medium zucchinis sliced
  • 2 cups cherry tomatoes halved
  • 1 medium onion chopped
  • 3 cloves garlic minced
  • 1 cup grated mozzarella cheese
  • 1 cup grated Parmesan cheese
  • 1/2 cup breadcrumbs
  • 1/4 cup olive oil
  • 2 teaspoons dried basil
  • 2 teaspoons dried oregano
  • salt and pepper to taste

Instructions

  • Begin by washing and slicing the zucchinis into thin rounds. Halve the cherry tomatoes and chop the onion finely. Mince the garlic cloves to release their vibrant aroma.
  • Heat half of the olive oil in a large skillet over medium heat. Add the chopped onion and cook until softened, about 5 minutes. Stir in the minced garlic and cook for another minute until fragrant.
  • Add the sliced zucchinis and halved cherry tomatoes to the skillet. Sprinkle the dried basil, oregano, salt, and pepper over the vegetables. Toss everything together and cook for about 5-7 minutes, just until the vegetables begin to soften but still hold their shape.
  • Preheat your oven to 375°F (190°C). Lightly grease a baking dish with the remaining olive oil. Transfer the sautéed vegetables into the dish, spreading them evenly. Sprinkle the grated mozzarella and Parmesan cheese over the top.
  • In a small bowl, mix the breadcrumbs with a drizzle of olive oil to help them crisp up nicely in the oven. Evenly distribute the breadcrumb mixture over the cheese layer.
  • Place the casserole in the preheated oven and bake for 25-30 minutes until the cheese is bubbly and golden brown, and the breadcrumb topping is crispy. Let it cool for a few minutes before serving.

Equipment

  • Large Skillet
  • Baking Dish
  • Small Bowl

Notes

  • Slice zucchinis evenly to ensure uniform cooking and baking.
  • Use fresh herbs like basil and oregano for an enhanced flavor if available.
  • Avoid overcrowding the skillet; sauté vegetables in batches if necessary to prevent steaming.
  • Prefer freshly grated cheeses over pre-shredded for better melting and taste.
  • Serve with protein or a fresh salad for a complete meal.