Italian Crustless Caprese Quiche

If you ask me, quiche doesn’t need a crust to be delicious.

This crustless Caprese quiche brings together fresh tomatoes, basil, and mozzarella in a simple egg dish that works for breakfast, lunch, or dinner. The classic Italian flavors meld together as it bakes, with garlic and red pepper flakes adding a nice kick.

It’s lighter than traditional quiche since there’s no buttery crust to deal with. Fresh mozzarella melts into creamy pockets throughout, while Parmesan adds a salty finish on top.

It’s an easy weeknight meal that feels a bit fancy, perfect for when you want something satisfying without a lot of fuss.

What Kind of Mozzarella Should I Use?

Fresh mozzarella is really the star of this quiche, and you have a few options at the grocery store. You can grab the small balls (called bocconcini or ciliegine) which are perfect bite-sized pieces, or buy a larger ball and cut it into chunks yourself. The key difference between fresh mozzarella and the pre-shredded stuff is moisture – fresh mozzarella is packed in water or brine and has a soft, creamy texture that melts beautifully in this recipe. Before adding it to your quiche, make sure to drain the mozzarella well and pat it dry with a paper towel to avoid a watery quiche.

Options for Substitutions

This quiche is pretty forgiving when it comes to swaps, so here are some options if you need them:

• Grape or cherry tomatoes: Regular tomatoes work fine too – just dice them up and drain any excess liquid before adding them to the quiche to avoid a watery result.
• Fresh basil: If you don’t have fresh basil, you can use 1-2 tablespoons of dried basil instead. Just remember that dried herbs are more concentrated, so start with less and adjust to taste.
• Almond milk: Any milk works here – whole milk, 2%, oat milk, or even heavy cream if you want something richer. Each will give you a slightly different texture, but all taste great.
• Fresh mozzarella: You can swap this with shredded mozzarella, but reduce the amount to about 1 cup since it’s more compact. Fresh mozzarella gives that classic Caprese feel though, so stick with it if you can.
• Eggs: The eggs are really the star here and hold everything together, so I wouldn’t recommend substituting these – they’re what makes this a quiche after all.

Watch Out for These Mistakes While Baking

The biggest issue with crustless quiche is excess liquid pooling at the bottom, which happens when you skip draining the tomatoes before adding them – pat those halved grape tomatoes dry with paper towels to avoid a watery quiche.

Another mistake is pouring the egg mixture too quickly, which can displace your carefully arranged tomatoes and cheese, so pour slowly around the edges and let it settle naturally.

Using cold eggs straight from the fridge can lead to uneven cooking, so let them sit at room temperature for about 20 minutes before whisking, and always check the center with a knife – it should come out mostly clean with just a slight wobble in the middle.

Finally, resist the urge to slice into your quiche right away, as letting it rest for 10 minutes after baking allows it to firm up and makes serving much cleaner.

What to Serve With Caprese Quiche?

This quiche is perfect for brunch or a light dinner, and it pairs beautifully with a simple arugula salad tossed with olive oil and lemon juice. I love serving it alongside some crusty bread or buttery croissants for a complete meal that feels special but doesn’t require much effort. If you’re feeding a crowd, consider adding some roasted potatoes or a fruit salad with berries and melon to round out the spread. The quiche is also great on its own with just a cup of coffee or mimosa for a relaxed weekend breakfast.

Storage Instructions

Store: This crustless quiche keeps really well in the fridge for up to 4 days. Just cover it tightly with plastic wrap or store it in an airtight container. I like to slice it into individual portions before storing so I can grab a piece for breakfast or lunch throughout the week.

Freeze: You can freeze individual slices wrapped in plastic wrap and then placed in a freezer bag for up to 2 months. This makes it super easy to pull out just what you need for a quick meal.

Reheat: Warm up slices in the microwave for about 45-60 seconds, or pop them in a 350°F oven for 10-15 minutes if you want the edges to crisp up a bit. From frozen, just add an extra minute or two to the microwave time or thaw it overnight in the fridge first.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 650-750
• Protein: 45-55 g
• Fat: 42-50 g
• Carbohydrates: 18-24 g

Ingredients

For the filling:

• 1 1/2 cups tomatoes (sliced into 1/4-inch rounds and patted dry)
• 1/2 cup fresh basil
• 4 garlic cloves (freshly minced for best aroma)
• 6 oz mozzarella (I always use Galbani fresh mozzarella for better melting)
• 1/4 teaspoon crushed red pepper flakes

For the custard:

• 8 eggs (large, at room temperature)
• 1/2 cup milk (I prefer Horizon Organic whole milk for a richer taste)
• 3/4 tsp salt
• 1/4 tsp pepper
• 2 tablespoons grated Parmesan cheese

Step 1: Prepare Ingredients and Preheat Oven

• 1 1/2 cups tomatoes
• 1/2 cup fresh basil
• 4 garlic cloves
• 6 oz mozzarella

Preheat your oven to 350°F.

While it heats, prepare your mise en place: slice tomatoes into 1/4-inch rounds and pat them thoroughly dry with paper towels—this prevents excess moisture from making the quiche watery.

Mince the garlic cloves finely, tear the fresh basil into bite-sized pieces, and tear or cut the 6 ounces of mozzarella into small pieces.

Have all ingredients measured and ready before you begin cooking.

Step 2: Build the Flavor Base in the Pan

• tomatoes, basil, garlic, and mozzarella from Step 1
• 1/4 teaspoon crushed red pepper flakes

Lightly oil or butter a 9-inch pie dish or similar baking dish.

Layer the prepared tomato slices on the bottom, then scatter the minced garlic, torn basil, and mozzarella pieces evenly over the tomatoes.

Sprinkle the crushed red pepper flakes across the filling—this adds a subtle heat that complements the fresh caprese flavors beautifully.

The layering approach ensures each bite gets a balanced mix of ingredients.

Step 3: Prepare and Pour the Egg Custard

• 8 eggs
• 1/2 cup milk
• 3/4 tsp salt
• 1/4 tsp pepper

In a mixing bowl, whisk together the 8 room-temperature eggs and milk until well combined and slightly frothy—room temperature eggs blend more smoothly and cook more evenly.

Add the salt and pepper, whisking until fully incorporated.

Carefully pour this egg mixture over the tomato and cheese filling in the baking dish, letting it flow into all the spaces.

The egg custard will set around the filling and create a tender, savory crumb.

Step 4: Initial Bake and Top with Cheese

• 2 ounces mozzarella
• 2 tablespoons grated Parmesan cheese

Bake the quiche uncovered at 350°F for 30-35 minutes, until the edges are set but the center still has a slight jiggle when you gently shake the pan—this indicates the custard is almost cooked through but still creamy.

Remove from the oven and distribute the remaining 2 ounces of mozzarella over the top, then sprinkle the grated Parmesan cheese evenly across the surface.

I like to add the cheese in two stages so the first layer melts into the custard while the top layer gets slightly browned and textured.

Step 5: Final Bake and Rest

Return the quiche to the oven and bake for another 12-15 minutes, until the cheese on top is melted and lightly golden and the center is just barely set.

Remove from the oven and let the quiche rest for 5 minutes before serving—this brief rest allows the custard to set slightly and makes it easier to slice cleanly.

The residual heat will finish cooking the very center without making it rubbery.

Step 6: Serve

• 1/2 cup fresh basil

Slice the quiche into wedges and serve warm or at room temperature.

Garnish each slice with a few fresh basil leaves for a bright finish and an extra pop of fresh flavor that ties back to the classic caprese theme.

Italian Crustless Caprese Quiche

Delicious Italian Crustless Caprese Quiche recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 40 minutes mins

Total Time 1 hour hr

Servings: 6 servings

Calories: 700

Ingredients Method

Ingredients

  

For the filling:

• 1 1/2 cups tomatoes (sliced into 1/4-inch rounds and patted dry)
• 1/2 cup fresh basil
• 4 garlic cloves (freshly minced for best aroma)
• 6 oz mozzarella (I always use Galbani fresh mozzarella for better melting)
• 1/4 teaspoon crushed red pepper flakes

For the custard:

• 8 eggs (large, at room temperature)
• 1/2 cup milk (I prefer Horizon Organic whole milk for a richer taste)
• 3/4 tsp salt
• 1/4 tsp pepper
• 2 tablespoons grated Parmesan cheese

Method

 

1. Preheat your oven to 350°F. While it heats, prepare your mise en place: slice tomatoes into 1/4-inch rounds and pat them thoroughly dry with paper towels—this prevents excess moisture from making the quiche watery. Mince the garlic cloves finely, tear the fresh basil into bite-sized pieces, and tear or cut the 6 ounces of mozzarella into small pieces. Have all ingredients measured and ready before you begin cooking.
2. Lightly oil or butter a 9-inch pie dish or similar baking dish. Layer the prepared tomato slices on the bottom, then scatter the minced garlic, torn basil, and mozzarella pieces evenly over the tomatoes. Sprinkle the crushed red pepper flakes across the filling—this adds a subtle heat that complements the fresh caprese flavors beautifully. The layering approach ensures each bite gets a balanced mix of ingredients.
3. In a mixing bowl, whisk together the 8 room-temperature eggs and milk until well combined and slightly frothy—room temperature eggs blend more smoothly and cook more evenly. Add the salt and pepper, whisking until fully incorporated. Carefully pour this egg mixture over the tomato and cheese filling in the baking dish, letting it flow into all the spaces. The egg custard will set around the filling and create a tender, savory crumb.
4. Bake the quiche uncovered at 350°F for 30-35 minutes, until the edges are set but the center still has a slight jiggle when you gently shake the pan—this indicates the custard is almost cooked through but still creamy. Remove from the oven and distribute the remaining 2 ounces of mozzarella over the top, then sprinkle the grated Parmesan cheese evenly across the surface. I like to add the cheese in two stages so the first layer melts into the custard while the top layer gets slightly browned and textured.
5. Return the quiche to the oven and bake for another 12-15 minutes, until the cheese on top is melted and lightly golden and the center is just barely set. Remove from the oven and let the quiche rest for 5 minutes before serving—this brief rest allows the custard to set slightly and makes it easier to slice cleanly. The residual heat will finish cooking the very center without making it rubbery.
6. Slice the quiche into wedges and serve warm or at room temperature. Garnish each slice with a few fresh basil leaves for a bright finish and an extra pop of fresh flavor that ties back to the classic caprese theme.