Name: Crustless Garden Vegetable Quiche Recipe
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Ingredients: 6 large eggs; 1 cup whole milk or 2 percent milk; 1 cup half and half or heavy cream; 1 cup shredded cheese (Cheddar, Swiss, Gruyère, or a blend); 2 tablespoons grated Parmesan cheese; 2 tablespoons sour cream or plain Greek yogurt; 1 teaspoon Dijon mustard; 1 small yellow onion, finely diced; 1 small red bell pepper, diced; 1 small zucchini, diced; 1 cup chopped fresh spinach or baby kale, loosely packed; 1/2 cup cherry tomatoes, halved or quartered; 1 small clove garlic, minced; 3/4 teaspoon kosher salt, plus more to taste; 1/2 teaspoon black pepper; 1/2 teaspoon smoked paprika or sweet paprika; 1/4 teaspoon dried thyme or Italian seasoning; 1 pinch red pepper flakes; 1 tablespoon olive oil or avocado oil; 1 tablespoon butter, for greasing the baking dish; 1/4 cup crumbled feta or goat cheese; 2 tablespoons chopped fresh herbs such as chives, parsley, or basil; 1/4 cup cooked crumbled bacon, turkey bacon, or breakfast sausage; 1/4 cup shredded cooked chicken

Crustless Garden Vegetable Quiche Recipe tastes creamy, cheesy, and full of fresh veggie flavor with a golden top and custardy center. It works well for busy home cooks who want a healthy breakfast, brunch, or light dinner in about 45 minutes from start to table. I first made this on a chaotic school morning, and my kids still ask for “the veggie pie with no crust.”

Why Crustless Garden Vegetable Quiche Recipe Is Worth It

This crustless garden vegetable quiche recipe skips the fuss of rolling dough, so you save time and cut down on dishes. You still get a rich, custardy interior with plenty of cheese and colorful vegetables in every bite.

The recipe uses simple, flexible ingredients that you probably already keep in the fridge. You can swap veggies based on seasons or sales, and the quiche still sets beautifully and slices cleanly.

Tastes like a fancy café brunch but comes together with weeknight effort and pantry staples. ★★★★★

Ingredients You Need

Eggs and dairy

6 large eggs
1 cup whole milk or 2 percent milk
1 cup half and half or heavy cream
1 cup shredded cheese
- Cheddar, Swiss, Gruyère, or a blend all work well
- I often use a pre shredded Mexican blend when I feel lazy, and it melts nicely
2 tablespoons grated Parmesan cheese for extra savory flavor
2 tablespoons sour cream or plain Greek yogurt for extra richness and tenderness
1 teaspoon Dijon mustard to deepen flavor

Vegetables

Use about 2 to 2½ cups total chopped vegetables.

1 small yellow onion, finely diced
1 small red bell pepper, diced
1 small zucchini, diced
1 cup chopped fresh spinach or baby kale, loosely packed
½ cup cherry tomatoes, halved or quartered
1 small clove garlic, minced

You can use frozen vegetables as a shortcut. Thaw them, squeeze out extra moisture, and pat them dry with a paper towel so the quiche sets firmly.

Seasonings

¾ teaspoon kosher salt, plus more to taste
½ teaspoon black pepper
½ teaspoon smoked paprika or sweet paprika
¼ teaspoon dried thyme or Italian seasoning
Pinch of red pepper flakes, optional, for gentle heat

Fats

1 tablespoon olive oil or avocado oil for sautéing vegetables
1 tablespoon butter to grease the baking dish and add flavor

Optional mix ins

¼ cup crumbled feta or goat cheese for tang
2 tablespoons chopped fresh herbs such as chives, parsley, or basil
¼ cup cooked crumbled bacon, turkey bacon, or breakfast sausage
¼ cup shredded cooked chicken for extra protein

Equipment

9 inch deep dish pie plate or 9 inch square baking dish
Large skillet for sautéing vegetables
Medium mixing bowl for whisking eggs and dairy
Whisk
Rubber spatula or wooden spoon
Measuring cups and spoons
Cooling rack
Sharp knife for slicing

Quick Tips & substitutions

Sauté watery vegetables like zucchini, mushrooms, and spinach so the quiche sets firm and not watery.
Use whole milk or a mix of milk and cream for the best texture; skim milk can make the quiche feel rubbery.
Use pre shredded cheese as a time saver, but grate a little fresh Parmesan if you want stronger flavor.
Swap spinach with kale, chard, or frozen spinach that you thaw and squeeze dry.
Replace bell pepper with roasted red peppers from a jar for a smoky shortcut.
Use lactose free milk and lactose free cheese if you need a gentler option.
Use a nonstick spray or butter on the baking dish so slices lift out easily.
Let the quiche rest at least 10 to 15 minutes before slicing so it holds together.
Bake on a middle rack so the top browns evenly without burning.
If the top browns too fast, tent the dish loosely with foil during the last 10 minutes.

How to Make Crustless Garden Vegetable Quiche Recipe

Step 1: Prep the oven and pan

Preheat the oven to 375°F. Grease a 9 inch deep dish pie plate or 9 inch square baking dish with butter or nonstick spray. Set the dish on a baking sheet to catch any drips and to move it easily.

Step 2: Prep and sauté the vegetables

Chop all vegetables into small, even pieces so they cook quickly and distribute well. Heat the olive oil in a large skillet over medium heat. Add onion and bell pepper, and cook about 4 to 5 minutes until they soften and turn lightly golden.

Add zucchini and cook another 3 minutes while you stir often. Stir in garlic and cook 30 seconds until it smells fragrant. Add spinach and cook 1 to 2 minutes until it wilts and releases moisture, then cook another minute so the pan looks mostly dry.

Season the vegetables with a pinch of salt and pepper. Turn off the heat and let the mixture cool for a few minutes so it does not scramble the eggs later. Pat the cherry tomatoes dry with a paper towel and keep them aside for topping.

Step 3: Mix the egg custard

Crack the eggs into a medium mixing bowl. Add milk, half and half, sour cream or Greek yogurt, Dijon mustard, salt, pepper, paprika, and dried thyme. Whisk until the mixture looks smooth and no streaks of egg white remain.

Stir in the shredded cheese and Parmesan. Add any optional cooked meat, feta, or herbs at this stage. Taste a small spoonful of the custard and adjust salt and pepper if needed.

Step 4: Assemble the quiche

Spread the cooled vegetable mixture evenly in the greased baking dish. Pour the egg and cheese mixture over the vegetables and gently shake the dish to settle everything. Arrange the cherry tomato halves on top, cut side up, so they look pretty and roast slightly.

Sprinkle a little extra shredded cheese or Parmesan on top if you like a more golden crusty top. Tap the pan lightly on the counter to pop any big air bubbles. Place the baking dish on the baking sheet if you have not already.

Step 5: Bake to perfection

Slide the quiche into the preheated oven on the middle rack. Bake 30 to 40 minutes, depending on your oven and the depth of the dish. Check at 30 minutes; the edges should look set and lightly browned, and the center should jiggle slightly like soft Jell O.

If the top browns too quickly, tent a piece of foil over the dish without pressing it onto the quiche. Test doneness by inserting a knife or toothpick near the center; it should come out mostly clean with no wet egg. Keep in mind that the quiche continues to firm up as it cools.

Step 6: Rest, slice, and serve

Place the baked quiche on a cooling rack. Let it rest at least 10 to 15 minutes so the custard settles and slices hold their shape. Run a knife around the edge of the dish if needed, then cut into wedges or squares.

Serve warm, at room temperature, or chilled from the fridge, depending on your mood and the weather. Add toppings like extra herbs, a spoonful of salsa, or a dollop of Greek yogurt. Enjoy the crustless garden vegetable quiche recipe as a main dish or a hearty side.

Recipe Variations

Gluten free: The recipe already skips crust, so it fits a gluten free plan as long as your cheese and seasonings list gluten free on the label.
Dairy light: Use 2 percent milk and reduce cheese to ¾ cup, then add extra veggies for volume.
Dairy free: Use an unsweetened almond or oat milk and a dairy free shredded cheese; add 1 tablespoon nutritional yeast for extra savory flavor.
Vegan: Use a liquid egg replacer or a tofu based “egg” mix, dairy free milk, and vegan cheese; add extra seasoning like turmeric and black salt for eggy flavor.
Low carb: Load up on non starchy vegetables like spinach, broccoli, mushrooms, and zucchini, and use full fat dairy.
High protein: Add cooked chicken, turkey sausage, or extra egg whites to boost protein without much extra fat.
Extra veggie: Add roasted broccoli, asparagus tips, or sautéed mushrooms for more garden flavor.
Kid friendly: Use mild cheddar, skip red pepper flakes, and chop veggies very small so picky eaters do not notice them as much.

Ways to Serve Crustless Garden Vegetable Quiche Recipe

Pair slices with a simple green salad and a lemony vinaigrette.
Serve with roasted potatoes or sweet potatoes for a heartier brunch.
Add a side of fresh fruit like berries, melon, or orange slices.
Pack chilled slices in lunch boxes with carrot sticks and hummus.
Cut into small squares and serve as finger food at baby showers or brunch buffets.
Top warm slices with salsa, avocado, and a spoonful of Greek yogurt for a Tex Mex twist.

Storage Success

Let the crustless garden vegetable quiche cool to room temperature, then cover the dish tightly or transfer slices to airtight containers. Store in the fridge for up to 4 days, and reheat slices in the microwave or in a 325°F oven until warm. Freeze individual slices by wrapping them in plastic, then in foil, and keep them in a freezer bag for up to 2 months. Reheat frozen slices in the oven at 350°F until hot in the center, and enjoy a fast, veggie packed meal on busy days.