Here is my favorite instant pot caramelized onions recipe, with a simple, hands-off method that turns regular onions into sweet, golden, melt-in-your-mouth goodness in just a fraction of the time.
These caramelized onions are my go-to shortcut for busy weeknights when I want to add rich, deep flavor to everything from burgers to pasta. I usually make a big batch and keep them in the fridge all week. Nothing beats having perfectly caramelized onions ready to go, right?
Why You’ll Love These Instant Pot Caramelized Onions
- Quick and easy – What normally takes an hour of stirring on the stovetop is done in just 20-35 minutes with minimal effort in your Instant Pot.
- Hands-off cooking – No more standing over the stove and constantly stirring – just set it and let the pressure cooker do all the work for you.
- Simple ingredients – You probably already have everything you need in your kitchen: onions, butter, salt, pepper, and wine.
- Perfect for meal prep – Make a big batch and store them in the fridge to add instant flavor to burgers, soups, pasta, or grain bowls all week long.
- Rich, deep flavor – The pressure cooking process helps develop those sweet, golden caramelized flavors that make everything taste better.
What Kind of Onions Should I Use?
Yellow onions are your best bet for caramelized onions because they have the perfect balance of sweetness and flavor that develops beautifully during the long cooking process. Sweet onions like Vidalia or Walla Walla can work too, but they might end up a bit too sweet for some tastes. White onions will also do the job, though they won’t give you quite the same depth of flavor as yellow ones. When shopping, look for onions that feel firm and heavy for their size, with dry, papery skins and no soft spots or sprouting.
Options for Substitutions
This recipe is pretty straightforward, but here are some swaps you can make if needed:
- Yellow onions: Yellow onions are really the best choice here since they caramelize beautifully and have the right balance of sweetness. You could use white onions in a pinch, but avoid red onions as they won’t give you that classic caramelized flavor and color.
- Butter: You can substitute with olive oil or vegetable oil if you prefer, but butter adds a rich flavor that really makes a difference in the final result.
- Dry white wine or sherry: If you don’t have wine, you can use beef or vegetable broth instead. The wine helps deglaze and adds depth, but broth will work fine. You could also use apple cider vinegar (just 2 tablespoons) mixed with water to make up the full cup.
- Kosher salt: Regular table salt works too, but use about 1 1/2 teaspoons instead since table salt is finer and more concentrated than kosher salt.
Watch Out for These Mistakes While Cooking
The biggest mistake when making Instant Pot caramelized onions is rushing the process by using the high pressure setting, which steams the onions instead of properly caramelizing them – always use the sauté function to get that deep, golden color and rich flavor.
Another common error is not slicing your onions evenly, so aim for consistent half-inch slices to ensure they cook at the same rate and avoid having some pieces burnt while others remain undercooked.
Don’t skip deglazing the pot with wine or sherry after the initial sauté, as this step helps lift up all those flavorful brown bits from the bottom and prevents the dreaded “burn” notice on your Instant Pot.
Finally, resist the urge to add liquid beyond what’s called for in the recipe, since onions release their own moisture during cooking and too much liquid will leave you with mushy, watery onions instead of the jammy texture you’re after.
What to Serve With Caramelized Onions?
Caramelized onions are like the perfect sidekick that makes everything taste better! They’re amazing spooned over grilled steaks, burgers, or chicken, where their sweet and savory flavor really shines. I love piling them on top of pizza with goat cheese and fresh herbs, or stirring them into scrambled eggs for a fancy weekend breakfast. They also make a great addition to sandwiches and paninis, or you can mix them into mashed potatoes or serve them alongside roasted vegetables for an easy dinner upgrade.
Storage Instructions
Refrigerate: These caramelized onions are a real time-saver to have on hand! Store them in an airtight container in the fridge for up to a week. I love making a big batch on Sunday and using them throughout the week on burgers, in omelets, or stirred into pasta dishes.
Freeze: Caramelized onions freeze like a dream and are perfect for meal prep. Spread them out on a baking sheet to freeze individually first, then transfer to freezer bags or containers for up to 6 months. You can even freeze them in ice cube trays for perfect single-serving portions.
Use: No need to thaw frozen caramelized onions before using them in most recipes. Just toss them straight from the freezer into soups, stews, or onto pizza. If you want them at room temperature, just let them sit out for about 30 minutes or give them a quick warm-up in a skillet over low heat.
| Preparation Time | 5-10 minutes |
| Cooking Time | 15-25 minutes |
| Total Time | 20-35 minutes |
| Level of Difficulty | Easy |
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
- Calories: 550-650
- Protein: 6-8 g
- Fat: 20-24 g
- Carbohydrates: 80-95 g
Ingredients
- 1/2 tsp ground black pepper
- 2 tbsp butter (I like Kerrygold unsalted butter for this)
- 2.5 lb yellow onions (thinly sliced, about 1/8-inch thick)
- 1 cup dry sherry (or a dry white wine like Sauvignon Blanc)
- 2 tsp kosher salt
Step 1: Combine Ingredients in Instant Pot
- 2 1/2 lb yellow onions, sliced into 1/2-inch pieces (8 cups)
- 2 tbsp butter, in small cubes
- 2 tsp kosher salt
- 1/2 tsp ground black pepper
Add the sliced yellow onions, butter cubes, kosher salt, and ground black pepper to the container of your Instant Pot or another multi-use pressure cooker.
Stir well to evenly distribute the seasoning and butter among the onions.
Step 2: Pressure Cook the Onion Mixture
Secure the lid on the Instant Pot and set the vent to seal.
Cook using the high ‘Pressure Cook’ setting for 2 minutes.
Once the cooking cycle is complete, perform a quick release by immediately moving the vent to release pressure.
Carefully remove the lid once the pressure has dropped.
Step 3: Drain and Return the Onions
Carefully drain any excess liquid from the pressure-cooked onions.
Return the onions back to the pot to prepare for caramelization.
Step 4: Caramelize the Onions
- pressure-cooked onions from Step 2
With the onions back in the pot, set your Instant Pot to the high ‘Sauté’ setting.
Stir constantly and cook the onions until they are deeply golden and caramelized.
This process can take 10–20 minutes depending on your onions and how much liquid they originally released.
I always find that stirring constantly gives the most even caramelization—don’t walk away during this step!
Step 5: Deglaze with Wine (Optional)
- 1 cup dry sherry or white wine
If you like, add the dry sherry or white wine to the caramelized onions and cook, stirring, until the wine has evaporated.
This step adds a depth of flavor that I highly recommend if you have wine on hand.
Step 6: Store the Caramelized Onions
Remove the pot from heat.
Let the onions cool, then transfer them to an airtight container.
You can store the caramelized onions in the refrigerator for up to one week.
They’re fantastic on sandwiches, pizzas, or stirred into soups.
