Crustless Zucchini Quiche Recipe

Crustless Zucchini Quiche Recipe tastes light, cheesy, and savory with tender zucchini and a golden top that feels like comfort food without the heavy crust. It works perfectly for busy home cooks who want a make-ahead breakfast, easy brunch, or light dinner in about 45–50 minutes total. I tested this version on a sleepy Sunday in my tiny kitchen while my dog judged my cheese grating form, so you know it went through real-life conditions.

Why Crustless Zucchini Quiche Recipe Is Worth It

This crustless zucchini quiche recipe gives you all the flavor of quiche with less work and fewer carbs. You skip blind-baking a crust, yet still get a custardy center, cheesy edges, and plenty of veggies in every slice.

The recipe uses simple ingredients that you probably keep in your fridge and pantry. You can serve it warm, room temperature, or cold, so it fits meal prep, brunch spreads, or a quick “I forgot about dinner” situation.

“This Crustless Zucchini Quiche Recipe tastes rich and cozy while still feeling light enough for breakfast or dinner, and it earned a solid ★★★★★ from my picky brunch crew.”

Ingredients You Need

Main ingredients

• Zucchini – 2 medium (about 1 pound), grated or thinly sliced
  • Smaller zucchini stay more tender and less watery.
• Eggs – 6 large
  • Use good-quality eggs; they give better color and flavor.
• Milk – 1 cup
  • Whole milk gives the best texture, but 2% also works.
• Half-and-half or heavy cream – ¼ cup
  • Adds richness and a custardy feel; you can swap with more milk in a pinch.
• Cheese, shredded – 1½ cups total
  • Great combo: 1 cup shredded sharp cheddar + ½ cup grated Parmesan.
  • You can use Gruyère, Swiss, or Monterey Jack if you prefer.
• Onion – ½ medium, finely chopped
  • Yellow or sweet onion both work.
• Garlic – 2–3 cloves, minced
• Olive oil or butter – 1 tablespoon, for sautéing
• All-purpose flour – 3 tablespoons
  • Helps the quiche set without a crust; use a gluten-free blend if needed.
• Baking powder – ½ teaspoon
• Salt – 1 teaspoon, plus more to taste
• Black pepper – ½ teaspoon
• Dried Italian seasoning or dried thyme – 1 teaspoon
• Fresh herbs (optional but tasty) – 2 tablespoons chopped parsley, chives, or basil

Pantry shortcuts and notes

• Use pre-shredded cheese if you need speed, though freshly grated melts smoother.
• Use garlic powder and onion powder if you run out of fresh aromatics.
• Use bagged shredded zucchini if your grocery store carries it in the produce section.

Optional add-ins

• Cooked bacon, ham, or sausage crumbles
• Sliced cherry tomatoes (pat dry)
• Sautéed mushrooms
• Spinach (squeeze out moisture)
• Feta or goat cheese crumbles

Equipment list

• 9-inch pie dish or 9-inch round baking dish (glass or ceramic works best)
• Large skillet
• Mixing bowls (one large, one medium)
• Whisk
• Box grater or food processor with grating disc (for zucchini and cheese)
• Colander and clean kitchen towel (to squeeze zucchini)
• Measuring cups and spoons

Quick Tips & substitutions

• Squeeze grated zucchini very well to avoid a watery quiche.
• Salt the zucchini lightly, let it sit 10 minutes, then squeeze; this pulls out extra moisture.
• Use a gluten-free all-purpose blend instead of regular flour for a gluten-free version.
• Swap cheddar with Gruyère or Swiss for a more classic French-style flavor.
• Use 1¼ cups milk and skip the cream if you want a lighter version.
• Add ¼ teaspoon red pepper flakes if you like a gentle kick.
• Use ½ teaspoon garlic powder and ½ teaspoon onion powder if you skip fresh aromatics.
• Grease the pie dish generously so slices release cleanly.
• Let the quiche rest at least 10–15 minutes before slicing so it sets.
• Bake on a sheet pan if your pie dish feels very full, to catch any drips.

How to Make Crustless Zucchini Quiche Recipe

Step 1: Prep the zucchini

Wash the zucchini and trim the ends. Grate it on the large holes of a box grater or slice it very thin. Toss the zucchini with a pinch of salt and place it in a colander over the sink.

Let the zucchini sit 10 minutes so it releases moisture. Then wrap it in a clean kitchen towel and squeeze hard over the sink until it feels quite dry. This step keeps the crustless zucchini quiche recipe from turning soggy.

Step 2: Sauté veggies and aromatics

Heat olive oil or butter in a large skillet over medium heat. Add the chopped onion and cook until it turns soft and lightly golden, about 5–7 minutes. Stir in the garlic and cook 1 minute, until it smells fragrant.

Add the squeezed zucchini to the skillet and cook 3–4 minutes, stirring often. Season with a pinch of salt and pepper. Turn off the heat and let the mixture cool slightly while you mix the eggs.

Step 3: Mix the egg base

In a large mixing bowl, crack in the eggs and whisk until smooth and slightly frothy. Add the milk and cream, then whisk again. In a small bowl, mix the flour, baking powder, salt, pepper, and dried herbs.

Sprinkle the flour mixture into the egg mixture while you whisk, so no lumps form. Stir in about 1 cup of the shredded cheese, keeping ½ cup for the top. Add the chopped fresh herbs if you use them.

Step 4: Combine and assemble

Preheat your oven to 375°F (190°C). Grease a 9-inch pie dish with butter or oil, coating the bottom and sides well. Add the warm zucchini and onion mixture to the egg bowl and stir until everything looks evenly distributed.

Pour the mixture into the greased pie dish. Sprinkle the remaining ½ cup cheese evenly over the top. Place the dish on a baking sheet if you want extra insurance against spills.

Step 5: Bake to golden perfection

Slide the quiche into the oven and bake 30–35 minutes. The top should look puffed and golden, and the center should look set but still slightly jiggly when you nudge the dish. Insert a knife or toothpick near the center; it should come out mostly clean, with no runny egg.

If the top browns too quickly, tent it loosely with foil during the last 5–10 minutes. Once baked, remove the quiche from the oven and place it on a cooling rack. Let it rest 10–15 minutes before slicing so the custard firms up.

Step 6: Slice and serve

Run a thin knife around the edge of the dish to loosen the sides. Slice into 6–8 wedges, depending on how hungry everyone feels. Serve warm, room temperature, or chilled.

This crustless zucchini quiche recipe tastes great on its own or with simple sides. Leftovers reheat nicely in the oven or toaster oven, so you can enjoy easy breakfasts all week.

Recipe Variations

• Gluten-free – Use a gluten-free all-purpose flour blend in the same amount.
• Dairy-light – Use all 2% milk and reduce cheese to 1 cup; add extra herbs for flavor.
• Vegan – Use a chickpea flour “egg” base or a tofu-based custard, plant milk, and vegan cheese.
• Low carb – Skip the flour and baking powder; the texture turns a bit softer but still tasty.
• Protein boost – Add 1 cup cooked diced ham, turkey sausage, or rotisserie chicken.
• Extra veggie – Add sautéed mushrooms, spinach, or bell peppers (cook and drain well).
• Herb-forward – Double the fresh herbs and use a mix of parsley, basil, and chives.
• Cheese swap – Use feta and dill with zucchini for a Greek-inspired twist.

Ways to Serve Crustless Zucchini Quiche Recipe

• With a simple green salad and lemony vinaigrette.
• Alongside fresh fruit and yogurt for a brunch plate.
• With roasted potatoes or sweet potatoes for a heartier meal.
• With sliced avocado and cherry tomatoes on the side.
• With a bowl of tomato soup or vegetable soup for a cozy lunch.

Storage Success

Let the crustless zucchini quiche recipe cool to room temperature, then cover the dish tightly or transfer slices to an airtight container. Store in the fridge for up to 4 days. Reheat slices in a 325°F oven or toaster oven for 10–12 minutes, or in the microwave in short bursts so they do not overcook. Freeze individual slices tightly wrapped for up to 2 months, then thaw overnight in the fridge before reheating.