Three Cheese Caramelised Onion Pie with Rice Crust


Essentially this pie is a pimped up quiche with brown rice crust and a gorgeous balance of flavours. It is sure to impress!

Around Christmas time each year when people are putting their menus together, I regularly see posts in the Facebook group from people looking for amazing vegetarian mains for their Christmas spread.

This is a fab recipe to take care of that! It’s unique, interesting and absolutely delicious (as well as being healthy!)

Starting with the flavoursome Rice Crust, there are a number of (easy) elements to this

This layered bake is a savoury open topped pie held together by a flavoursome rice crust. To ‘build’ it we layer several different elements:

Brown Rice Crust

Cook rice (and quinoa) in thermie then combine with garlic and Parmesan for flavour and eggs to bind. Now bake in the oven while preparing the other layers.

Caramelised Onion

Cook onions with oil, sugar and vinegar to caramelise them. Spread this straight onto the rice crust.

Baby spinach

Top caramelised onion with a big handful of baby spinach. This adds colour and nutrition.


These are halved and placed side by side on top of the spinach, to form a layer of cheesy deliciousness!

Spiralised zucchini and carrot

This is the spiraliser I use, mine has lasted years! If you don’t have a spiraliser, you can peel strips of veg with your vegetable peeler, or even grate it. Pile zucchini then carrot on top of the bocconcini.

Grated cheese

This goes on next. It is grated in thermie while the bowl is still dry.

Egg/milk mixture

Combine eggs, milk, salt and pepper in thermie, then pour on top!

Once all the ingredients are in the dish, into the oven it goes. Here it bakes to perfection, all of the elements coming together into a really great pie.

Don’t let the total recipe time put you off. If need be, it’s quite fine to do some things in advance then put it all together right before baking. Trust me, it’s definitely worth it.

More Great Vegetarian Mains

Here are some other great vego mains recipes, to make and serve with side dishes.

Vegetable Lasagne

Spinach and Ricotta Stuffed Crepe Bake

Curried Meatless Loaf

Roasted Broccoli and Fetta Quiche, Cheesy Stuffed Vegetables or Mushroom Tart in Summer Meal Mix Up.

Of course for a really awesome collection of side dishes perfect to serve with these sorts of mains, check out my latest cookbook, Super Sides Made Easy. Visit the Facebook group to see what people are thinking of these recipes!

Print Recipe
5 from 2 votes

Three Cheese Caramelised Onion Pie

This unique layered pie consists of a brown rice and quinoa crust, filled with caramelised onion, spiralised veggies and a savoury cheesy egg custard to bind.
Prep Time10 minutes
Cook Time53 minutes
Baking45 minutes
Total Time1 hour 48 minutes
Course: Main Course
Cuisine: Gluten Free, Nut Free, Vegetarian
Keyword: Caramelised onion quiche, Rice crust, Three cheese pie
Servings: 8
Calories: 304kcal



  • 70 g cheddar cheese diced 1.5cm
  • Handful baby spinach
  • 220 g tub bocconcini drained, halved
  • 200 g zucchini spiralised, or grated, or peeled into strips with a vegetable peeler
  • 1 medium carrot spiralised, or grated, or peeled into strips with a vegetable peeler
  • 6 eggs
  • 150 g milk
  • salt and pepper

Brown Rice Crust

  • butter or olive oil for greasing
  • 20 g Parmesan cheese diced 1.5cm
  • 1 cup brown rice and quinoa (uncooked) (Note 1)
  • 2 garlic cloves 10g
  • 1 egg

Caramelised Onion

  • 150 g brown onion halved, sliced
  • 10 g olive oil or other oil of your choice
  • 15 g sugar my favourites for caramelising are rapadura and coconut sugar
  • 15 g balsamic vinegar


  • Preheat oven to 180°C. Grease a pie dish or deep quiche dish with butter or oil.
  • Place cheddar cheese in mixer bowl. Blitz 3 seconds/speed 8/MC on. Transfer to a small bowl, set aside.

To make the Crust

  • Place Parmesan and garlic in mixer bowl. Chop 6 seconds/speed 7/MC on. Transfer to a small bowl, set aside.
  • Place rice and quinoa in the steaming basket. Set in place inside mixer bowl. Add 1.2L water. Cook 30 minutes/steaming temperature/speed 4/MC on, or until rice is tender.
  • Remove basket. Discard water. Transfer cooked rice/quinoa, Parmesan/garlic mixture and egg into mixer bowl. Combine 10 seconds/reverse/speed 4/MC on.
  • Press rice mixture into prepared pie dish. Bake 10 minutes, or until just starting to brown. While crust is cooking, make the caramelised onion.

To make Caramelised Onion

  • Place onion and oil in mixer bowl. Cook 5 minutes/steaming temperature/reverse/speed 1/MC off.
  • Add sugar and vinegar. Cook 12 minutes/steaming temperature/reverse/speed 1/MC off.

To Construct the Pie

  • Spread caramelised onion onto the rice crust as evenly as you can. Top this with baby spinach, then bocconcini (cut side down), then zucchini and carrot, then the cheddar cheese you grated in Step 1.
  • Place eggs and milk in mixer bowl. Season with salt and pepper. Beat 10 seconds/speed 3/MC on. Carefully pour egg mixture onto the other ingredients in the pie crust. It will appear there is not enough liquid at this stage. Don’t worry, it will work!
  • Bake 40-45 minutes, until golden brown and when you gently push the middle, it springs back and no raw egg mixture seeps out. Allow to cool for 10 minutes before slicing and serving.


Note 1: For the brown rice and quinoa, I like to use mostly rice with a small portion of quinoa – I measure about 1/5 cup quinoa into my cup measure then fill the rest with rice. You can use any ratio you like, but I’d recommend a minimum of half a cup of rice.


Serving: 1serve | Calories: 304kcal | Carbohydrates: 26g | Protein: 16g | Fat: 16g | Saturated Fat: 6g | Cholesterol: 166mg | Sodium: 190mg | Potassium: 283mg | Fiber: 2g | Sugar: 5g | Vitamin A: 2484IU | Vitamin C: 7mg | Calcium: 255mg | Iron: 1mg

Please note, nutrition information is calculated via an online recipe nutrition calculator and is a guide only. It is provided as a courtesy and is not guaranteed 100% accurate. I am not a nutritionist or trained health professional.

Tried this recipe?Please rate it and leave feedback in the comments section below, or mention @Thermobexta or tag #Thermobexta on Instagram.
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8 years ago

Absolutely divine!

bec bio shot website

Hi, I'm Bec

I specialise in great tasting vegetarian Thermomix recipes and cater for a wide range of dietary needs. I love sharing here and in my cookbooks my healthy, delicious recipes (of course the odd treat too!) Whether you’re looking to ignite your thermo mojo, or just after some new, really tasty family friendly recipes, there really is something here for everyone



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