Rustic Baked Vegetable Gratin

A cozy, oven-baked dish layered with tender vegetables, herbs, and a golden cheesy crust—perfect as a hearty side or a comforting light main.

This Rustic Baked Vegetable Gratin is simple, nourishing, and endlessly customizable. Creamy on the inside, crisp on top, and packed with garden-fresh flavor.

⏱️ Time & Yield

Prep Time: 20 minutes
Bake Time: 45–55 minutes
Total Time: ~1 hour 15 minutes
Servings: 4–6

🧾 Ingredients

Vegetables

2 medium potatoes, thinly sliced
1 medium zucchini, thinly sliced
1 medium yellow squash or carrot, thinly sliced
1 small onion, thinly sliced
2 cloves garlic, minced

Creamy Layer

1 cup heavy cream (or half-and-half)
½ cup milk (any kind)
1 tsp salt
½ tsp black pepper
½ tsp dried thyme or Italian seasoning
Pinch of nutmeg (optional but classic)

Cheesy Topping

1 cup shredded cheese (Gruyère, mozzarella, cheddar, or a mix)
¼ cup grated Parmesan
2 tbsp breadcrumbs (optional, for extra crunch)

For the Dish

1 tbsp olive oil or butter (for greasing)
Fresh herbs for garnish (parsley or thyme)

👩‍🍳 Instructions (Step-by-Step)

1️⃣ Prep the Oven & Dish

Preheat oven to 190°C / 375°F
Grease a baking dish with olive oil or butter

2️⃣ Mix the Cream Base

In a bowl, whisk together:

Cream
Milk
Salt, pepper
Thyme
Nutmeg (if using)

3️⃣ Layer the Vegetables

Arrange potatoes in an even layer at the bottom.
Add zucchini, squash/carrots, onion, and garlic.
Repeat layers until all vegetables are used.
Pour cream mixture evenly over everything.

4️⃣ Add the Topping

Sprinkle shredded cheese evenly
Add Parmesan and breadcrumbs (if using)

5️⃣ Bake

Cover loosely with foil and bake 30 minutes
Remove foil and bake 15–25 minutes more, until golden and bubbling
Rest 10 minutes before serving

🌿 Nutrition Information (Approx. per serving)

Calories: 320–360
Carbohydrates: 28 g
Protein: 12 g
Fat: 20 g
Fiber: 4 g

🥜 Nut & Allergen Information

Nut-Free: Yes
Contains Dairy: Yes (cream, cheese)
Gluten-Free: Yes (omit breadcrumbs or use GF crumbs)
Egg-Free: Yes

⚠️ Always check cheese labels if cooking for allergies.

Q & A (Frequently Asked Questions)

Q1: Can I make this ahead of time?

Yes. Assemble up to 24 hours ahead, cover, refrigerate, and bake when needed.

Q2: Can I make it lighter?

Absolutely. Use low-fat milk, reduce cheese, or swap cream for evaporated milk.

Q3: How do I make it vegan?

Use plant-based cream, dairy-free cheese, and olive oil instead of butter.

Q4: Why are my potatoes still firm?

Slices may be too thick—aim for very thin slices (mandoline works great).

Q5: Can I add protein?

Yes! Add cooked lentils, mushrooms, or shredded chicken between layers.

⭐ Pro Tips

Slice vegetables evenly for uniform cooking
Let it rest before cutting—it firms up beautifully
Add a pinch of chili flakes for gentle heat

Author
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Sara Mitchell

Sara Mitchell is an expert restaurant content creator who writes easy-to-read guides about CAVA and other Mediterranean fast-casual chains in the United States. She covers locations, menus, prices, and hours, making it simple for visitors to find nearby restaurants and what to order quickly.

With years of experience in restaurant research and local SEO, Sara creates accurate, user-friendly guides that work for both people and search engines. Her goal is to help users go from search results to their nearest restaurant or menu choice with as few clicks as possible.