The secret ingredients for delicious caramelized onions

Welcome to this fascinating blog post about the secret ingredients behind the most delicious caramelized onions. Did you know that adding a pinch of baking soda to your onions significantly speeds up the caramelization process? A true game changer in the kitchen! Let's dive into this tasty world and let you shine like a true kitchen prince.

What are caramelized onions?

What are caramelized onions?

Caramelized onions are onions that are slowly fried in butter or oil until they become soft, sweet and brown in color. This cooking technique helps release the natural sugars in the onions and provides a deep, rich flavor.

Why are caramelized onions so popular?

Caramelized onions add a complex sweetness to dishes, making them much deeper in flavor. They are a versatile ingredient that can be used in both savory and sweet dishes and are often used as a topping for burgers, pizza, salads and more.

Cooking technique for caramelizing onions

Caramelizing onions requires patience and attention, but the results are totally worth it. Here's a simple step-by-step guide to making perfectly caramelized onions:

  1. Cut the onions into thin slices.
  2. Heat butter or oil in a pan over low heat.
  3. Add the onions and cook slowly for 30-45 minutes, stirring frequently, until soft and brown.

Why are caramelized onions so special?

  • Deep, rich flavor
  • Versatile in use
  • Improve the taste of various dishes
  • Can be stored for a long time in the refrigerator for use at any time

So what are you waiting for? Try making caramelized onions at home today and discover the magic they add to your dishes!

The secret ingredients for perfectly caramelized onions

Onion varieties

  • Yellow onions – Perfect for a mild sweet taste.
  • Red onions – Add a slight sharpness and color.
  • Sweet onions – Ideal for a deeper and softer taste.


  • Butter – Gives a rich, creamy flavor to the onions.
  • Olive oil – Adds a light fruitiness and is healthier than butter.
  • Coconut oil – Brings a subtle exotic touch to the caramelization.


  • Granulated sugar – Gives an extra sweet taste and promotes caramelization.
  • Brown sugar – For a deeper caramel flavor and darker color.
  • Maple syrup – Adds a unique sweetness and a hint of flavor.


  • Thyme – Adds an earthy and aromatic touch.
  • Rosemary – Gives a spicy and complex taste.
  • Balsamic vinegar – Brings a slight sweetness and sourness.

By choosing the right combination of onion varieties, fats, sugars and spices, you can take the taste and texture of your caramelized onions to the next level. Experiment with different ingredients and discover your perfect recipe for this delicious delicacy. Happy cooking!

The caramelization process

Caramelizing onions is an art that adds a deep, rich flavor to a dish. Follow these simple steps to caramelize onions properly and achieve delicious flavor.

Step 1: Cutting the onions

  • Start by cutting the onions into thin slices or cubes. A sharp kitchen knife, such as the Wüsthof Classic Ikon chef's knife, helps with precise cutting of the onions.

Step 2: Heating the pan

  • Heat a pan over medium heat. A high-quality frying pan such as the Le Creuset Signature cast iron frying pan ensures even heat distribution.

Step 3: Adding butter or oil

  • Add a knob of butter or a dash of oil to the heated pan. The Becel Original margarine provides a rich flavor during the caramelization process.

Step 4: Simmer slowly

  • Add the chopped onions to the pan and let them simmer slowly. Stir frequently to ensure even caramelization. A wooden spatula such as the OXO Good Grips wooden spatula is ideal for gently stirring the onions.

Step 5: The right timing

  • Caramelizing takes patience. Let the onions slowly turn golden brown, this can take up to 30 minutes. If desired, add a pinch of sugar for extra caramelization.

Step 6: Perfect caramelization

  • When the onions have reached a deep brown color, they are perfectly caramelized. Use the caramelized onions as a topping for burgers, pizzas or pasta for a delicious taste.

Follow these steps and enjoy the delicious taste of perfectly caramelized onions in your dishes!

1. Choose the right onions

To make really delicious caramelized onions, it is important to choose the right type of onion. Look for sweet onions such as Vidalia, Walla Walla or Maui onions. These onions have a natural sweetness that is perfect for caramelizing.

2. Use the right pan

For best results when caramelizing onions, a heavy-bottomed pan is ideal. A cast iron pan or a stainless steel pan are good choices because they distribute and retain heat evenly. This will caramelize the onions evenly without burning.

3. Add a pinch of sugar

Adding a pinch of sugar to the onions while caramelizing can help bring out the onions' natural sweetness and speed up caramelization. Use a fine granulated sugar such as Van Gilse Crystal Sugar for the best result.

4. Experiment with herbs and spices

To add extra flavor to the caramelized onions, you can try different herbs and spices. For example, add a little thyme, rosemary or balsamic vinegar for a surprising twist on the classic dish.

5. Variations and creative ideas

  • Mix the caramelized onions with a creamy goat's cheese such as Bettine Blanc for a delicious spread on toast.
  • Add the onions to a quiche with young Gouda cheese such as Old Amsterdam for a tasty filling.
  • Make a pizza with caramelized onions, fresh figs and prosciutto for a luxurious flavor combination.

With these tips and variations you are guaranteed to enjoy the perfectly caramelized onions in all their deliciousness!

Tasteful closing thoughts

In conclusion, with the revealed secret ingredients for delicious caramelized onions and the right cooking techniques, you can enjoy this tasty addition to various dishes. Give it a try and discover the magic of caramelized onions for yourself!

Frequently asked questions about caramelized onions

What ingredients are used besides onions for making caramelized onions?

In addition to onions, sugar, butter or oil, salt and sometimes an acid such as vinegar or balsamic vinegar are usually used to make caramelized onions. This creates the delicious taste and texture of caramelized onions.

How long does it take to properly caramelize onions?

It usually takes about 45 minutes to 1 hour to properly caramelize onions. While caramelizing, fry the onions over low heat, stirring regularly and being patient, until they turn nice and golden brown and sweet. It is important not to rush the onions, otherwise they may burn. Good luck cooking!

Which onions are best to use for making caramelized onions?

To make caramelized onions, it is best to use sweet onions. These onions contain less sulfur and have a naturally sweeter taste, which ensures a delicious caramelized result. Onion varieties such as yellow onion, Vidalia onion or Maui onion are good choices for this dish. After slowly frying and caramelizing these onions, you will enjoy a rich and sweet flavor in your dishes. Have fun cooking!

Are there certain techniques or tricks to make the onions extra tasty?

Absolute! A handy trick to make onions even more flavorful is to slowly caramelize them. Slice the onions thinly and fry them over low heat in oil or butter until they are golden brown and soft. This process can take up to 30 to 45 minutes, but the result is deliciously sweet and juicy onions that add great flavor to your dishes. A pinch of salt can also help bring out the onions' natural sweetness. Good luck and enjoy your meal!

Are there different ways to use caramelized onions in dishes? If so, what dishes go well with caramelized onions?

Yes, there are different ways to use caramelized onions in dishes. Caramelized onions go well with a variety of dishes, such as burgers, pizzas, grilled cheese sandwiches, casseroles and salads. They provide a deep, savory flavor and add a sweet touch to your dishes. Also try them as a topping on a steak or as a filling for savory pies. Caramelized onions offer a delicious addition to dishes!

Can you prepare caramelized onions in advance and if so, what is the best way to store them?

Yes, you can prepare caramelized onions in advance. After caramelizing them, let them cool completely before storing in an airtight container in the refrigerator. Caramelized onions keep well in the refrigerator for about 3-5 days. If you want to keep them longer, you can also freeze them. Place them in a freezer-safe bag or container and store them in the freezer for up to 3 months. Don't forget to write the date of preparation on the package so you know how long they have been stored.



Table of contents

Other blog posts

Shopping cart0
Your shopping cart is empty.... add something quickly
Continue shopping.