Potato and caramelised onion cake

This Potato and Caramelised Onion Cake combines earthy potatoes with sweet, caramelised onions and a hint of Parmesan for a rich, savoury dish. It's baked until golden brown, making it a hearty side or vegetarian main.

09 Feb 2026
Cook time 100 min
Prep time 50 min

Ingredients:

2 tbsp olive oil
2 onions
10 potatoes
1/4 cup butter
1/4 cup grated parmesan cheese
Potato and caramelised onion cake

Cooking a delicious and savory Potato and Caramelised Onion Cake can be a delightful experience. This dish brings together the earthy flavors of potatoes with the rich sweetness of caramelized onions, finished with the creamy notes of butter and the umami of Parmesan cheese. Perfect as a side dish or a main course, this recipe is sure to impress your family and friends.

Instructions:

1. Prepare the Onions:
- Heat the olive oil in a large skillet over medium heat.
- Add the sliced onions to the skillet and cook, stirring occasionally, until they are golden brown and caramelised. This process should take about 20-30 minutes. Reduce heat if they start to brown too quickly. Season with a pinch of salt and pepper.
2. Prepare the Potatoes:
- While the onions are caramelising, peel and thinly slice the potatoes. A mandoline slicer can be very helpful for this task to ensure even slices.
- Preheat your oven to 375°F (190°C) and grease a 9-inch (23 cm) round cake pan or a similar-sized baking dish with some of the melted butter.
3. Assemble the Cake:
- Layer one-third of the potato slices at the bottom of the greased pan. Brush a small amount of the melted butter over the potato layer.
- Sprinkle a portion of the grated Parmesan cheese over the potato layer.
- Spread half of the caramelised onions over the cheese layer.
- Repeat with another third of the potatoes, more melted butter, Parmesan cheese, and the remaining caramelised onions.
- Finish with the final layer of potatoes. Brush the remaining melted butter over the top layer and sprinkle the last of the Parmesan cheese evenly.
4. Bake the Cake:
- Cover the dish with aluminum foil and bake in the preheated oven for 45 minutes.
- Remove the foil and continue to bake for an additional 15-20 minutes, or until the top is golden brown and the potatoes are tender when pierced with a fork.
5. Serve:
- Allow the potato and caramelised onion cake to cool slightly before cutting into wedges.
- Serve warm as a delicious side dish or a vegetarian main course.

With a perfect blend of flavors and textures, the Potato and Caramelised Onion Cake is a versatile dish that can elevate any meal. By following these steps and tips, you will create a dish that is not only visually appealing but also irresistibly delicious. Enjoy this culinary treat and feel proud of the beautiful plate you’ve crafted.

Potato and caramelised onion cake FAQ:

What is the best way to know if the Potato and Caramelised Onion Cake is done?

The cake is done when the top is golden brown and the potatoes are tender when pierced with a fork. You can check by inserting a fork into the center of the cake; it should slide in easily if the potatoes are fully cooked.

Can I make any substitutions for the Parmesan cheese?

Yes, you can substitute Parmesan with similar hard cheeses such as Pecorino Romano or Grana Padano. For a dairy-free option, consider using a vegan cheese alternative that melts well.

What pan size is recommended for this recipe?

A 9-inch (23 cm) round cake pan or a similar-sized baking dish works best for this recipe. Ensure it's greased well to prevent sticking.

How should I store leftovers of the Potato and Caramelised Onion Cake?

Store any leftovers in an airtight container in the refrigerator for up to 3-4 days. You can reheat slices in the oven or microwave until warmed through.

What is the baking time for different sized pans?

If using a smaller pan, check for doneness about 5-10 minutes earlier, as the cake may cook faster. For a larger pan, expect an additional 10-15 minutes; just ensure the center is cooked through.

Cooking Tips:

- Choose a starchy variety of potatoes, like Russets, for a better texture.

- Thinly slice the potatoes evenly to ensure they cook uniformly.

- Be patient with caramelizing the onions – low and slow cooking brings out their sweetness.

- Use a mandoline slicer for consistent and thin potato slices.

- For extra flavor, consider adding fresh herbs like thyme or rosemary.

- Make sure the pan is well-greased to prevent the cake from sticking.

Nutrition Facts

8 Servings
Calories 270kcal
Protein 6g
Carbohydrates 45g
Fiber 6g
Sugar 4.42g
Fat 10g

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