Crustless Tuna Breakfast Quiche

Don’t be misled by the name — this healthy crustless tuna breakfast quiche works any time of day. It’s easy to meal prep for the week and can be made low carb simply by omitting the oats. This savory, protein-packed recipe is a great way to use canned tuna and fits well into clean-eating plans.

This quiche brings back memories of a small Portuguese café where my sister and I used to go every Sunday while we lived in Germany. We’d always order a sweet treat and a savory bite — one of the savory favorites was a mini tuna quiche. I’m not sure of their exact recipe, but the simple, comforting flavor is what inspired this large crustless version.

You don’t have to make it crustless, but skipping the crust is quicker and lighter, and I often opt for that when I want an easy, healthy meal without extra fuss.

Tuna Breakfast Quiche Ingredients

You’ll need simple, wholesome ingredients:

Eggs
Tuna (canned, drained)
Zucchini
Carrot (omit for a lower-carb version)
Onion
Black pepper
Dill
Basil
Oats (optional for texture)

This recipe also uses cream cheese for creaminess. If you prefer dairy-free, skip the cream cheese — the quiche will still set and taste good.

How To Make Crustless Tuna Quiche

The method is straightforward:

Chop and grate the vegetables.
Open and drain a can of tuna.
Whisk cream cheese into the eggs until mostly smooth, then stir in the rest of the ingredients.
Pour the mixture into a lined baking pan and bake.

I used a springform pan, but any small baking dish or a muffin tin will work — mini quiches are perfect for grab-and-go breakfasts. Bake until the center is set and a toothpick comes out clean, then let cool before slicing.

Meal Prep And Storing

This quiche is ideal for meal prep. Bake it as a whole and slice into portions, or make mini quiches in a muffin pan for single servings. Store cooled pieces in an airtight container in the fridge for up to three days — though it rarely lasts that long in my kitchen.

Variations and Tips

This recipe is very adaptable. Use the base idea — eggs plus vegetables and tuna — and modify to suit your preferences:

Low carb: Omit oats and the carrot. For extra fiber without carbs, add a small amount of almond, flaxseed, or coconut flour if desired.
Vegetarian: Skip the tuna and add cooked potatoes or canned chickpeas, or keep it low carb with broccoli or cauliflower.
Swap protein: Use cooked chicken instead of tuna for a different flavor profile.
Dairy-free: Leave out the cream cheese; the quiche will be less rich but still tasty.
Adjust seasonings: Add jalapeño or crushed red pepper for heat, or go Greek with feta, chopped peppers, and olives.

Feel free to experiment — as long as you have eggs and vegetables, you can create many satisfying versions of this crustless quiche.

Yield: 4