Delia Smith’s Cheese and Onion Pie is everything you want from classic British comfort food: rich, cheesy, a little creamy, and wrapped in a buttery, flaky crust.
This is the kind of pie you bake when you want something simple that tastes like home.
It fills the kitchen with the smell of sweet onions and golden pastry — and trust me, no one can wait for it to cool properly.
Why This Cheese and Onion Pie Works So Well
- Strong cheddar gives it proper punchy flavor
- Caramelized onions add deep sweetness without being heavy
- Cheddar cheese pastry makes the crust extra rich
- Double cream keeps the filling silky and luscious
- It’s hearty enough for dinner, but light enough for lunch too
Ingredients (And Why They Matter)
For the Pastry:
- Plain flour: the base for a flaky, tender crust
- Lard and butter: combo for crispness and flavor
- Grated cheddar cheese: loads flavor right into the pastry
- Dry mustard powder: a hint of sharpness to cut the richness
- Cayenne: just a pinch to wake it all up
- Cold water: brings it together without making it tough
For the Filling:
- Onions: the star — sweet and rich once caramelized
- Butter: to cook the onions gently without burning
- Eggs: help set the filling into a soft custard
- Double cream: makes the filling silky and rich
How to Make It
- Make the pastry
Rub lard and butter into the flour until crumbly. Stir in cheese, mustard, cayenne, and a pinch of salt.
Add cold water slowly until it just comes together. Chill for 30 minutes. - Caramelize the onions
Cook onions low and slow in butter for about 40 minutes. Stir now and then until deep golden and sweet. - Prep the tin
Roll out the pastry to about 28cm wide. Line a loose-bottomed tart tin. Prick the base with a fork. Freeze for 30 minutes. - Blind bake
Heat oven to 190°C. Put a baking sheet in too.
Line pastry with foil, add baking beans, and bake on the hot tray for 15 minutes.
Remove foil, brush base with beaten egg, and bake another 7–8 minutes. - Assemble the pie
Spread half the onions into the tart case.
Whisk eggs, cream, salt, and pepper together.
Pour half over the onions.
Add the rest of the onions, then pour the rest of the egg mix on top. - Top and bake
Sprinkle with a little more grated cheese if you like.
Bake 35–40 minutes until golden and puffy. - Cool and serve
Let the pie sit in the tin for 10 minutes before easing it out and slicing.

Common Mistakes and How to Fix Them
What Went Wrong | Why It Happens | How to Fix It |
---|---|---|
Soggy pastry | Skipped blind baking | Always blind bake and egg wash the base |
Filling too wet | Didn’t caramelize onions enough | Cook onions slowly until really golden |
Pie cracked | Pastry too dry | Add enough cold water to dough |
Filling bland | Not enough cheese or seasoning | Season well and use strong cheddar |
What to Serve With It
- Crisp green salad with vinaigrette
- Steamed broccoli or green beans
- Roasted carrots or parsnips
- A little tangy pickle on the side
How to Store and Reheat
Storage:
Cool the pie fully. Cover and keep in the fridge for up to 3 days.
Freezing:
Wrap slices in foil and freeze for up to 3 months.
Reheating:
- Oven: 350°F (175°C), covered loosely, for 15–20 minutes.
- Microwave: 1–2 minutes per slice (but pastry will soften).
- Stovetop: Low heat in a covered pan for about 5–7 minutes.
A Quick Bite of History
Cheese and onion pie is old-school British comfort — originally a thrifty way to feed a crowd with simple ingredients: onions, cheese, and flour.
Delia Smith’s version sticks close to tradition but adds rich pastry and cream, turning it into something you’d proudly serve at any table
Try More Delia Smith Recipes:

Delia Smith Cheese And Onion Pie
Description
Delia Smith’s Cheese and Onion Pie is a rich, creamy dish packed with caramelized onions, strong cheddar, and buttery cheese pastry — the ultimate British comfort food.
Ingredients
Pastry:
Filling:
Instructions
- Make pastry, chill for 30 minutes.
- Caramelize onions slowly in butter (about 40 minutes).
- Roll pastry, line a 28cm tin, freeze 30 minutes.
- Blind bake at 190°C on preheated tray, 15 minutes.
Remove foil, egg wash base, bake another 7–8 minutes. - Layer half the onions into the case.
- Whisk eggs and cream with seasoning, pour half over onions.
- Add remaining onions, top with rest of egg mixture.
- Sprinkle with extra cheese if you want.
- Bake 35–40 minutes at 180°C until golden.
- Cool 10 minutes before serving.
Notes
- Always chill the pastry before rolling to keep it tender.
- Don’t rush the onion caramelizing — it’s the key to big flavor.
- Use strong mature cheddar for best results.
- Freezes brilliantly if you want to prep ahead.