Easy French Onion Crustless Quiche Recipe
This easy French onion crustless quiche is rich, cheesy, and packed with sweet caramelised onions and savoury flavour.
Perfect for breakfast, lunch, dinner, or meal prep, this crustless quiche is simple to make and lighter than traditional pastry-based quiches.
Why You’ll Love This Recipe
- No pastry required
- Rich caramelised onion flavour
- Easy make-ahead meal
- Perfect for lunch or dinner
- Great freezer-friendly recipe
Ingredients
For the Quiche
- Vegetable oil
- Brown onions
- Brown sugar
- French onion soup mix
- Self-raising flour
- Milk
- Eggs
- Cheddar cheese
- Fresh thyme leaves
To Serve
- Mixed baby lettuce leaves
- Extra thyme leaves
How to Make French Onion Crustless Quiche
Step 1: Caramelise the Onions
Heat oil in a frying pan over medium heat.
Cook onions slowly until soft and golden.
Add brown sugar and continue cooking until beautifully caramelised.
Set aside to cool slightly.
Step 2: Prepare the Quiche Mixture
In a large bowl, combine French onion soup mix and flour.
Gradually whisk in milk and eggs until smooth.
Stir through the caramelised onions and grated cheese.
Step 3: Bake the Quiche
Pour the mixture into a greased pie dish.
Sprinkle with fresh thyme leaves.
Bake until puffed, golden, and set in the centre.
Step 4: Serve
Allow the quiche to cool slightly before slicing.
Serve warm or cold with fresh salad leaves on the side.
Tips for the Best Crustless Quiche
- Cook onions slowly for deeper flavour
- Let the quiche rest before slicing
- Use freshly grated cheese for better melting
- Avoid overbaking to keep the texture soft
- Add cooked bacon or spinach for variation
Serving Suggestions
This quiche pairs perfectly with:
- Green salad
- Roasted vegetables
- Garlic bread
- Tomato relish
- Soup for lunch
Meal Prep & Freezing Tips
This quiche can be made ahead and refrigerated for up to 3 days.
It also freezes well for up to 2 months.
Reheat directly from frozen in the oven until warmed through.
Final Thoughts
This easy French onion crustless quiche is rich, cheesy, and full of comforting flavour. With caramelised onions, fluffy eggs, and melted cheddar, it’s a simple yet satisfying meal perfect for any time of day.