Hey there, friend! Let’s chat about a recipe that’s like a warm hug from the French countryside: Roasted Ratatouille Quiche. This dish is a beautiful mash-up of vibrant, roasted summer veggies—like zucchini, eggplant, bell peppers, and tomatoes—tucked into a flaky pastry crust with a creamy, cheesy egg custard. It’s savory, satisfying, and bursting with Mediterranean flavors that make your taste buds do a happy dance. Picture it for a lazy weekend brunch, a light weeknight dinner with a side salad, or even a make-ahead lunch for the week. I fell in love with this recipe when I was trying to use up a pile of farmers’ market veggies, and it’s become a staple in my kitchen ever since. It’s my go-to when I want something that feels fancy but doesn’t require me to spend all day in the kitchen. Ready to bring a little Provençal magic to your table? Let’s dive in!
Why You’ll Love This Recipe
- Packed with flavor: Roasting the veggies brings out their natural sweetness and depth, while fresh herbs and Gruyère cheese add a savory, nutty kick.
- Perfect for any occasion: This quiche shines at brunch, lunch, dinner, or even a picnic—it’s a versatile crowd-pleaser.
- Make-ahead magic: Whip it up on Sunday, and you’ve got meals ready for days. It freezes like a dream, too!
- Veggie-packed and wholesome: It’s vegetarian, loaded with nutrients, and a great way to sneak in those summer veggies.
- Impressively easy: Despite its gourmet vibes, the steps are straightforward, and you don’t need any fancy equipment.
- Customizable: Swap veggies, cheeses, or herbs to suit your taste or whatever’s in your fridge.
- Gorgeous presentation: The colorful veggies make this quiche a stunner on any table, perfect for guests or Instagram snaps.

Ingredients You’ll Need
- Eggplant (Small, firm ones are best—roasting makes them tender and flavorful).
- Zucchini (Look for medium-sized ones for the perfect texture).
- Red bell pepper (Adds sweetness and a pop of color; yellow or orange work too).
- Cherry tomatoes (These roast into juicy little flavor bombs—don’t skip ‘em!).
- Yellow onion (For a subtle sweetness that balances the dish).
- Garlic (Because roasted garlic makes everything better—trust me).
- Olive oil (Use a good-quality one for roasting; it enhances the veggies’ flavor).
- Fresh thyme (The woodsy aroma screams Mediterranean—dried works in a pinch).
- Pie crust (Store-bought or homemade; puff pastry is a fun twist if you’re feeling adventurous).
- Large eggs (The backbone of the custard—fresh is best).
- Heavy cream (For that rich, creamy texture; half-and-half works for a lighter option).
- Gruyère cheese (Its nutty, melty goodness is perfect, but Swiss or cheddar can sub in).
- Salt and pepper (To bring all the flavors together).
(Note: A complete list of ingredients with exact measurements is included in the instructions section below.)
How to Make It (Step-by-Step Instructions)
Step 1: Preheat and prep
Crank your oven to 400°F (200°C) and grab a large baking sheet. Line it with parchment paper for easy cleanup. While the oven’s heating, rinse your veggies and get ready to chop. Having everything prepped makes this process smooth as butter.
Pro tip: Use a sharp knife for even veggie slices—it makes roasting more consistent and the final dish prettier.
Step 2: Roast the veggies
Chop the eggplant, zucchini, and red bell pepper into ½-inch cubes. Halve the cherry tomatoes and thinly slice the onion. Mince two garlic cloves. Toss all the veggies on the baking sheet with 2 tablespoons of olive oil, a pinch of salt, pepper, and a teaspoon of fresh thyme leaves. Spread them out evenly—no crowding! Roast for 20–25 minutes, stirring halfway, until the veggies are tender and slightly caramelized.
Note: Roasting times vary by oven, so keep an eye on the tomatoes—they should be soft but not mushy. If the eggplant looks dry, drizzle a tiny bit more oil.
Step 3: Prep the pie crust
While the veggies roast, roll out your pie crust (or unroll a store-bought one) and fit it into a 9-inch pie dish. Trim any excess and crimp the edges for a pretty look. Prick the bottom with a fork to prevent puffing. Line with parchment and add pie weights (or dried beans). Bake at 400°F for 10 minutes, then remove the weights and parchment and bake for another 5 minutes until lightly golden.
Why this matters: Pre-baking (aka blind baking) keeps the crust crisp and prevents a soggy bottom.
Step 4: Make the custard
In a large bowl, whisk together 4 large eggs and ¾ cup heavy cream until smooth. Grate 1 cup of Gruyère cheese and stir it in, along with a pinch of salt, pepper, and ½ teaspoon of fresh thyme. This is your creamy, dreamy custard base.
Heads-up: Don’t overwhisk—you want it smooth, not frothy, to keep the texture silky.
Step 5: Assemble the quiche
Spread the roasted veggies evenly over the pre-baked crust. Pour the egg custard over the top, gently shaking the dish to let it settle. If you’re feeling artsy, arrange a few extra tomato halves or pepper strips on top for a pop of color. Sprinkle with a little extra cheese if you’re in a decadent mood.
Optional tweak: For extra flavor, toss in a handful of chopped fresh basil or a pinch of red pepper flakes before pouring the custard.
Step 6: Bake and cool
Lower the oven to 375°F (190°C). Place the quiche on a baking sheet (to catch any drips) and bake for 35–40 minutes, until the custard is set and the top is golden. A knife inserted in the center should come out clean. Let it cool for 10–15 minutes before slicing—this helps the custard firm up.
Serving tip: Serve warm or at room temperature with a simple green salad or crusty bread for a complete meal.
Helpful Tips
This quiche is a total winner, but these tips will make it even better and fit seamlessly into your life:
- Meal prep superstar: Bake the quiche on Sunday and slice it into portions for grab-and-go breakfasts or lunches. It reheats beautifully in the microwave (30–60 seconds) or oven (10 minutes at 325°F).
- Storage know-how: Store leftovers in an airtight container in the fridge for up to 4 days. For longer storage, wrap individual slices tightly in plastic wrap and freeze for up to 2 months. Thaw in the fridge overnight and reheat gently.
- Reheating without drying out: To keep the custard creamy, reheat in the oven at 325°F with a piece of foil loosely covering the top. Microwaving works for speed but can make the crust a bit soft.
- Perfect pairings: Serve with a peppery arugula salad dressed with lemon vinaigrette to complement the rich custard. For drinks, a chilled rosé or sparkling water with a lemon twist is divine. For heartier meals, pair with roasted potatoes or a light soup.
- Creative twists: Swap Gruyère for goat cheese for a tangy twist, or add a handful of pitted olives or capers for a briny kick. If you’re not vegetarian, crumbled sausage or bacon adds smoky depth. For a vegan version, try a silken tofu custard and skip the cheese.
- Use up leftovers: Got extra roasted veggies? Toss them into a frittata, stir them into pasta, or blend them into a soup. The ratatouille mix is super versatile.
Frequently Asked Questions (FAQs)
Can I make this quiche ahead of time?
Yes! Bake it fully, let it cool, and store it in the fridge for up to 4 days. Reheat in the oven at 325°F for 10–15 minutes. You can also roast the veggies a day ahead to save time.
Can I freeze this quiche?
Absolutely! Cool the baked quiche completely, wrap it tightly in plastic wrap and foil, and freeze for up to 2 months. Thaw in the fridge overnight and reheat at 325°F until warmed through.
What if I don’t have Gruyère cheese?
No problem! Swiss, cheddar, or even mozzarella work well. For a bolder flavor, try crumbled feta or goat cheese. Just keep the total amount around 1 cup.
Is this recipe good for meal prep?
It’s fantastic for meal prep! Slice it into wedges, store in airtight containers, and you’ve got breakfast, lunch, or dinner ready for 4 days. It’s great cold or reheated, making it super flexible.
How do I make it vegetarian/vegan?
This recipe is already vegetarian! For a vegan version, use a plant-based pie crust, replace eggs and cream with a blend of silken tofu, nutritional yeast, and non-dairy milk, and skip the cheese or use a vegan alternative.
I whip up this roasted ratatouille quiche whenever I’m craving something cozy yet vibrant, which is probably once a month in my house! It’s my secret weapon for impressing guests without breaking a sweat. One last tip: sprinkle a little fresh basil on top just before serving for a burst of color and flavor. Give it a try and let me know how it turns out—I’d love to hear your favorite veggie combos or how you serve it!

Roasted Ratatouille Quiche
Ingredients
- 1 pre-made pie crust or homemade if preferred
- 1 small zucchini diced
- 1 small eggplant diced
- 1 red bell pepper diced
- 1 yellow bell pepper diced
- 1 small onion chopped
- 2 tablespoons olive oil
- Salt and pepper to taste
- 3 large eggs
- 1 cup heavy cream
- 1 cup shredded Gruyère cheese or other cheese of choice
- 2 tablespoons fresh basil chopped
- ½ teaspoon dried thyme
- ½ teaspoon garlic powder
- Optional: 1 tablespoon balsamic vinegar for a deeper flavor
Instructions
- Preheat oven and prepare the vegetables: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper. Place the zucchini, eggplant, bell peppers, and onion on the sheet. Drizzle with olive oil and season with salt, pepper, and thyme. Roast for 20–25 minutes, stirring halfway through, until the vegetables are tender and slightly caramelized.
- Prepare the quiche base: While the vegetables roast, fit your pie crust into a 9-inch pie pan, pressing it gently into the edges. Place the crust in the fridge to chill while you prepare the filling.
- Make the custard: In a mixing bowl, whisk together the eggs, heavy cream, garlic powder, and chopped basil. Season with salt and pepper to taste. Stir in the shredded cheese until well combined.
- Assemble the quiche: Once the roasted vegetables have cooled slightly, evenly distribute them over the chilled pie crust. Pour the custard mixture over the top, ensuring the vegetables are well-covered.
- Bake the quiche: Bake the quiche in the preheated oven for 35–40 minutes or until the custard is set and the top is golden brown.
- Serve: Allow the quiche to cool for a few minutes before slicing and serving. Garnish with extra basil, if desired.
Notes
- You can use other vegetables such as cherry tomatoes or mushrooms in place of the peppers and eggplant.
- For a richer flavor, drizzle the roasted vegetables with balsamic vinegar before roasting.
- The quiche can be made ahead of time and stored in the fridge for up to 3 days. To reheat, warm in the oven at 350°F for 10–15 minutes.
- Feel free to swap out Gruyère for cheddar, mozzarella, or any cheese you prefer.