Name: Tomato Zucchini Quiche Recipe
Prep time: 20 min
Cook time: 40 min
Total time: 60 min
Ingredients: 1 single 9-inch pie crust, unbaked; 1 egg white, lightly beaten; 1 medium zucchini, thinly sliced into half moons; 1 cup cherry or grape tomatoes, halved; 1 small yellow onion, thinly sliced; 2 cloves garlic, minced; 1 tablespoon olive oil; 1 teaspoon kosher salt, divided; 1/2 teaspoon freshly ground black pepper, divided; 4 large eggs; 1 cup half-and-half or whole milk; 1/4 teaspoon fine sea salt; 1/4 teaspoon black pepper; 1/4 teaspoon smoked paprika or sweet paprika; 1/4 teaspoon dried thyme or Italian seasoning; 1 cup shredded cheese (such as Gruyere, cheddar, mozzarella, or a mix); 2 tablespoons grated Parmesan; 2 tablespoons chopped fresh basil or parsley, for garnish; 1 pinch red pepper flakes

Tomato Zucchini Quiche Recipe packs a buttery crust, a creamy cheesy filling, and sweet bursts of tomato with tender zucchini in every bite. It works perfectly for a weekend brunch, a light weeknight dinner, or meal prep, and you can get it on the table in about 1 hour total. I first baked a version of this quiche in my tiny first apartment kitchen, and the smell of roasting tomatoes and cheese still takes me right back.

Why Make This Tomato Zucchini Quiche Recipe at Home

You control the veggies, the cheese, and the crust, so this quiche tastes fresher and lighter than most café versions. The tomatoes stay juicy, the zucchini stays tender, and the custard sets creamy instead of rubbery.

You also save money and stretch ingredients you already keep in the fridge. This Tomato Zucchini Quiche Recipe also works beautifully as a make-ahead breakfast, so you win back time on busy mornings.

“This Tomato Zucchini Quiche Recipe tastes like a fancy bakery brunch but comes together with simple ingredients and zero stress, ★★★★★”

Ingredients You Need

Crust options

1 single pie crust, 9-inch, unbaked
- Use a good quality refrigerated pie crust if you want a shortcut.
- If you prefer homemade, use your favorite all-butter crust recipe and chill it well.
1 egg white, lightly beaten, for brushing the crust
- This helps keep the bottom from getting soggy.

Veggies

1 medium zucchini, thinly sliced into half moons
1 cup cherry or grape tomatoes, halved
- Roma tomatoes also work; slice them thin and pat them dry.
1 small yellow onion, thinly sliced
2 cloves garlic, minced
1 tablespoon olive oil
1 teaspoon kosher salt, divided
1/2 teaspoon freshly ground black pepper, divided

Custard base

4 large eggs
1 cup half-and-half or whole milk
- Use half-and-half for a richer, creamier quiche.
1/4 teaspoon fine sea salt
1/4 teaspoon black pepper
1/4 teaspoon smoked paprika or sweet paprika
1/4 teaspoon dried thyme or Italian seasoning

Cheese

1 cup shredded cheese total, choose any combo:
- Gruyere: nutty flavor, melts beautifully.
- Sharp cheddar: bold flavor and nice color.
- Mozzarella: great melt, milder flavor.
- Feta: crumble a little on top for tang, but mix it with a melty cheese.

Optional add-ins

2 tablespoons grated Parmesan, for extra savory flavor
2 tablespoons chopped fresh basil or parsley, for garnish
Pinch of red pepper flakes, if you like a little heat

Equipment

9-inch pie dish (glass or metal)
Baking sheet (to catch drips and help with moving the quiche)
Large skillet
Mixing bowl
Whisk
Cutting board and sharp knife
Measuring cups and spoons

Tips & Mistakes

Prebake the crust for 10 minutes so the bottom stays crisp and does not turn soggy.
Pat tomatoes and zucchini dry with paper towels so they do not water down the custard.
Slice veggies thin so they cook through without turning mushy.
Use room temperature eggs and dairy so the custard mixes smoothly and bakes evenly.
Do not overfill the crust; leave a little space at the top to prevent overflow.
Bake the quiche on a baking sheet so you catch any drips and move it easily.
Pull the quiche when the center still has a slight jiggle; it finishes setting as it cools.
Let the quiche rest at least 15 minutes before slicing so the filling holds together.
Avoid low fat milk, which can make the texture watery and bland.
Season the veggies in the pan and the custard in the bowl so the flavor runs through every bite.

How to Make Tomato Zucchini Quiche Recipe

Preheat your oven to 375°F and place a rack in the middle. Fit the pie crust into a 9-inch pie dish, press it into the corners, and crimp the edges. Prick the bottom a few times with a fork.

Brush the inside of the crust with the beaten egg white. Bake the crust for 8 to 10 minutes until it looks slightly dry and just starts to color. Set the crust aside while you cook the filling.

Step 2: Sauté veggies and aromatics

Heat olive oil in a large skillet over medium heat. Add the sliced onion and zucchini, season with half the salt and half the pepper, and cook 6 to 8 minutes, until the onion softens and the zucchini turns lightly golden in spots. Stir in the garlic and cook 1 minute, until it smells fragrant.

Add the halved tomatoes and cook 2 to 3 minutes, just until they start to soften and release a little juice. Taste and adjust the seasoning with a pinch more salt if needed. Turn off the heat and let the veggies cool slightly while you mix the custard.

Step 3: Mix the custard

Crack the eggs into a mixing bowl and whisk until the yolks and whites blend completely. Add the half-and-half or milk, the remaining salt and pepper, paprika, and dried thyme. Whisk until the mixture looks smooth and uniform.

Stir in about two thirds of the shredded cheese. If you use Parmesan or red pepper flakes, stir them in now. Set the bowl aside.

Step 4: Assemble the Tomato Zucchini Quiche Recipe

Spread the sautéed veggies evenly over the bottom of the par-baked crust. Give the custard a quick whisk and pour it gently over the veggies. Sprinkle the remaining cheese over the top.

Place the pie dish on a baking sheet to catch any spills. If you use fresh basil or parsley inside the quiche, tuck a few leaves into the top layer now. Move the baking sheet with the quiche to the oven.

Step 5: Bake until just set

Bake at 375°F for 30 to 35 minutes, until the edges puff and the center still has a slight jiggle when you nudge the dish. If the crust or cheese browns too quickly, tent the quiche loosely with foil. Check doneness by inserting a knife near the center; it should come out mostly clean with no liquid egg.

Remove the quiche from the oven and place it on a cooling rack. Let it rest 15 to 20 minutes so the custard sets and slices cleanly. Sprinkle with fresh herbs right before serving.

Variations I've Tried

I swap half the zucchini for thinly sliced yellow squash when I want extra color. I also add a handful of baby spinach to the skillet near the end of cooking and let it wilt for a greener version. Sometimes I use feta with cherry tomatoes and basil for a more Mediterranean vibe.

If I need a higher protein breakfast, I add cooked turkey sausage or crumbled chicken sausage to the veggie layer. I also tried a crustless version in a greased pie dish, and it worked nicely for a lighter, gluten free option. Just reduce the dairy slightly so the custard sets firm.

How to Serve Tomato Zucchini Quiche Recipe

Serve this Tomato Zucchini Quiche Recipe slightly warm or at room temperature so the flavors shine. Pair it with a simple green salad, sliced fruit, or a bowl of berries for a balanced meal. Kids often enjoy it with carrot sticks and a little ranch on the side.

You can also cut the quiche into small squares and serve it as a brunch buffet item. It travels well, so you can pack slices in lunch boxes with cucumber sticks and a small yogurt.

How to store

Cool the quiche completely, then cover the dish tightly or wrap individual slices and keep in the fridge for up to 4 days.
Freeze individual slices on a baking sheet until firm, then wrap and store in a freezer bag for up to 2 months.
Reheat slices in a 350°F oven or toaster oven for 10 to 15 minutes until hot; this keeps the crust crisp.
Use the microwave only for quick reheating, in short bursts, since it can soften the crust.