Vegetable Gratin

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Photo by Dedra Wolff licensed under CC BY 2.0

Vegetable Gratin

Prep Time 15 mins
Cook Time 10 mins
Course Side Dish
Cuisine French
Servings 4 people


  • 1 red onion mediums
  • 1 garlic cloves
  • 3 medium zucchinis
  • 2 medium tomatoes
  • 2 sweet potatoes
  • 1 tsp dried oregano
  • 1 tsp dried thyme
  • 1 tsp dried marjoram
  • 3 tbsp olive oil
  • 1/2 cup grated mozzarella


  • Preheat oven to 350° F
  • Grease a 12-inch baking dish, set aside
  • Peel the sweet potatoes, onion and garlic.
  • Slice all the vegetables using a mandoline to ensure an even thickness
  • Place the sliced vegetables in the baking dish, in an alternating pattern.
  • Make only one layer to make sure it cooks evenly
  • In a medium mixing bowl, stir olive oil, herbs, and garlic, season with salt and pepper.
  • Drizzle the mixture over the vegetable gratin
  • Cover the dish with foil and bake for 30 minutes or until the vegetables are al dente
  • If desired, remove the foil, add a handful of grated cheese and bake for another 5-10 minutes until the cheese is melted and grilled
  • Insert a toothpick or knife in the center of the vegetable gratin, when it is soft, it is cooked