Amazing Crustless Tuna Quiche in 6 Slices

Oh my gosh, if you are looking for that magical weeknight dinner that tastes like comfort food but doesn’t weigh you down, you HAVE to try this. I’m always trying to sneak more protein into my family’s meals without making them feel like they’re eating diet food, and this recipe is my absolute ace in the hole.

Forget everything you think you know about fussy pie crusts that crumble everywhere. We are skipping that mess entirely! This Crustless Tuna Quiche bakes up beautifully golden, holds its shape perfectly for slicing, and is packed with good stuff. Seriously, I’ve made hundreds of high-protein lunches for busy weeks, and this one is always the first to disappear from the fridge.

It’s the perfect blend of creamy, savory, and cheesy. You just mix everything in one bowl – yes, ONE BOWL! – pour it in a dish, and let the oven do the magic. Trust me, once you see how easy this is, it’ll be permanently bookmarked for those “I have zero time” evenings.

Why You’ll Love This Crustless Tuna Quiche Recipe

I know you’re busy, so I need to tell you exactly why this recipe immediately jumped to the top of my favorite dinner rotation. It’s one of those rare dishes that checks every box: quick, healthy, and tastes phenomenal even cold the next day. You won’t regret making this Crustless Tuna Quiche!

• Quick Preparation Time

  Seriously, I time myself! From pulling ingredients out to pouring the mix into the dish takes barely ten minutes. It’s faster than ordering takeout, I promise you that.

• High Protein Content

  Between the tuna and that secret weapon—Greek yogurt—this dish keeps everyone satisfied way longer than a regular casserole would. It’s great fuel for busy afternoons.

• Excellent for Meal Prep

  This is my favorite part. Once it cools down, it slices like a dream. I cut it into six perfect wedges, and they stack neatly in the fridge. No mushy sides here!

Gathering Your Ingredients for Crustless Tuna Quiche

Okay, let’s talk about what you need! The beauty of this Crustless Tuna Quiche is that most of this stuff is probably already in your pantry or fridge, which is why it’s such a lifesaver for emergency dinners. Because there’s no crust to hide behind, every single ingredient has to pull its weight in flavor and texture.

I’ve listed everything out below, but I have a couple of quick notes before you start grabbing things. Pay close attention to the draining and chopping instructions—they really matter for how this sets up!

Essential Components

When you’re measuring out, I need you to be precise, especially with the liquids and the tuna. No guessing allowed here! We want that perfect custard texture, not something watery.

Table of Ingredients

Here’s the exact breakdown. Make sure your tuna is drained until it’s almost dry, and your pepper is chopped small so it blends in nicely.

Amount	Ingredient	Preparation Note
1 tablespoon	Olive oil	For greasing the dish
1 can (5 ounces)	Tuna in water	Drained very well
4 large	Eggs	Room temperature is best
1 half cup	Plain Greek yogurt	Full fat or 2% works great
1 quarter cup	Milk	Any kind is fine
1 cup	Shredded sharp cheddar cheese	Freshly shredded is a bonus!
1 half cup	Red bell pepper	Finely diced
2 tablespoons	Green onions	Finely chopped
1 half teaspoon	Kosher salt	Start here, adjust later
1 quarter teaspoon	Black pepper	Freshly ground is best

Equipment Needed for Your Crustless Tuna Quiche

You don’t need a fancy kitchen for this one, thank goodness! Since we aren’t dealing with rolling out dough or worrying about pastry blenders, the equipment list is super short. Having the right basics makes the 10-minute prep fly by, so make sure these items are clean and ready to go.

Baking Tools

These are the non-negotiables for getting the mixture combined and into the oven correctly:

• A good 9-inch pie dish. Glass or ceramic works perfectly, just make sure it’s deep enough for the batter.
• One large mixing bowl. This is where all the one-bowl magic happens!
• A sturdy whisk for the eggs and dairy base.

Step-by-Step Instructions for Your Crustless Tuna Quiche

This is where the fun starts! I always put my oven on first because I get so excited about mixing everything else that I forget to preheat. Don’t be like me! Getting that heat right is crucial for a good set on your Crustless Tuna Quiche.

Preparing for Baking

First things first, crank that oven up to 400°F. I mean it, get it hot! Next, grab that olive oil and lightly grease your 9-inch pie dish. You want a good sheen over the bottom and up the sides. This helps the edges brown nicely and prevents any sticking down the road. Don’t be shy with the oil, but you don’t need a puddle, just enough to coat.

Mixing the Wet and Dry Components

Now for the whisking! In your big bowl, throw in those four eggs, that half cup of Greek yogurt, and the milk. Whisk this aggressively—I mean really work it—until it is perfectly smooth. You want zero streaks of yogurt hanging around. Once that’s velvety, start folding in your shredded cheddar, the diced red pepper, and the green onions. Then, sprinkle in your salt and pepper. Gently stir until everything is just combined. Remember, we aren’t whipping air in here; we’re just mixing!

Incorporating the Tuna and Final Pour

Here comes the star! Take your well-drained tuna and flake it into small pieces right over the batter. Use a rubber spatula and fold it in very carefully. You don’t want to mash the tuna into paste; you want little pockets of fish throughout the quiche. Once it’s evenly distributed, pour that glorious mixture right into your prepared pie dish. Give the dish a gentle shake to let the top settle evenly.

Baking and Setting the Crustless Tuna Quiche

Slide that dish right into the hot oven. Bake it for about 25 to 30 minutes. Keep an eye on it! You’re looking for the top to be lightly golden brown. More importantly, you need the center to be set. I always grab my instant-read thermometer for this—it needs to hit 160°F internally for food safety. That’s my non-negotiable step for any egg dish!

Resting for Perfect Slices

This is the hardest part: waiting! Pull the Crustless Tuna Quiche out and let it hang out on the counter for a full 10 minutes before you even think about slicing it. If you cut it right away, it will slump and ooze everywhere, and nobody wants a sad, sloppy slice. That resting time lets the custard firm up so you get those clean, beautiful wedges you want for dinner or meal prep!

Expert Tips for the Best Crustless Tuna Quiche Results

I’ve made this recipe so many times now that I’ve learned a few tricks that take it from “good” to “I need the recipe immediately!” My goal is always to make sure your Crustless Tuna Quiche comes out firm, savory, and never watery. Because we skip the crust, we have to be very careful about excess liquid sneaking in!

Moisture Control

Listen up, this is the most important thing you can do: you must drain that tuna aggressively. I mean, really press it down in the can with the lid or the back of a fork before it even hits the bowl. If you skip this step, you’ll end up with a soupy bottom layer, and nobody wants that! Check my notes section above; I really stress how important this is for getting clean slices later on.

Achieving a Smooth Batter

When you mix the eggs, yogurt, and milk, don’t treat it like you’re just stirring cereal. You need to whisk it hard! I like to use a medium-sized balloon whisk and whip it until it looks totally homogenous—like a pale yellow satin sheet. If you leave clumps of yogurt in there, they won’t melt into the egg custard properly, and you’ll end up with weird little rubbery pockets in your finished quiche. Whisk until your arm gets tired for just a second!

Storing and Reheating Your Crustless Tuna Quiche

This recipe is honestly the best thing to have in the fridge for lunches later in the week. The structure of this Crustless Tuna Quiche is fantastic, so it holds up really well. When it comes out of the oven and rests for that 10 minutes, it firms up beautifully, making leftovers totally manageable!

Storage Guidelines

Once it’s completely cooled down—and I mean room temperature cool, not just warm—you can cover the pie dish tightly with plastic wrap or transfer the slices to an airtight container. I usually just cover the dish with foil since it saves me from having to wash extra containers. It stays great in the regular fridge for about four days. It’s a total lifesaver for a quick grab-and-go breakfast too!

Table for Storage and Reheating

Here’s my quick reference guide for dealing with the leftovers. It’s super straightforward!

Storage Location	Maximum Duration	Reheating Method
Refrigerator	4 days	Microwave (30-45 seconds) or Oven (10 min at 350°F)
Freezer (wrapped well)	Up to 2 months	Thaw overnight, then reheat in oven

Frequently Asked Questions About Crustless Tuna Quiche

I always get a few questions when people make this for the first time, especially since it doesn’t have a traditional crust. Don’t worry, I’ve got the answers right here so your first Crustless Tuna Quiche turns out absolutely perfect!

Can I substitute the cheese in this Crustless Tuna Quiche?

Yes, you totally can swap out the sharp cheddar, but you want something that melts well. Monterey Jack or Gruyère would be lovely additions for a richer flavor. If you use a cheese that’s less sharp, you might want to add a tiny pinch more salt. Just try to stick to about one cup total, because too much cheese can mess with the egg-to-dairy ratio we worked so hard to get right!

What is the best way to check if the quiche is fully cooked?

Visuals are great, but when dealing with eggs, temperature is king for safety and texture! You’re looking for that beautiful light golden color on top, which usually happens around the 25-minute mark. But the real test is the center. I always stick a clean knife or a thermometer in there. If the knife comes out mostly clean, or the internal temperature hits 160°F, you’re golden. If it jiggles a lot in the middle, give it five more minutes!

How many servings does this recipe yield?

This recipe is perfect for a family dinner or for meal prepping a few lunches. It yields exactly six good-sized servings. If you cut it into eight smaller slices, it works great as a light lunch or a side dish, but I usually stick to six hearty portions!

Sharing Your Crustless Tuna Quiche Experience

I’m so excited for you to try this easy, high-protein dinner staple! It’s been such a winner in my kitchen, and I really hope it becomes one for yours too. I love hearing what you think once you’ve had a chance to bake it up. You can see more quick meal ideas on my Medium profile!

Rate and Comment

Did the Greek yogurt make it creamier than you expected? Let me know! Please take a second to leave a star rating right below this post and drop a comment telling me how it went. I read every single one, and your feedback helps other busy cooks decide to give this great recipe a try! You can also find inspiration for other quick meals on my Pinterest boards.

Print