Caramelized Onion Dip
Published 12/5/2024
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Our homemade caramelized onion dip will quickly become your favorite party appetizer! It’s packed with amazing savory flavor, oven-roasted onions and garlic cloves, and creamy Greek yogurt and sour cream.
A little sweet, totally savory, and delightfully thick caramelized onion dip is our go-to party appetizer, and has been for years. It’s always the first appetizer to disappear on game day, impresses a crowd, is made with wholesome ingredients, and comes together easily without many dishes to clean!
Roast the onions and garlic in the oven, then mix it all together with Greek yogurt, sour cream, and some spices for the ultimate app. It’s totally versatile, tastes great with veggies, crackers, and more, and is packed with flavor. Make a double (or even triple!) batch for your next gathering. Trust us! This dip will disappear 😉
Featured Comment
“This recipe was so delicious and so easy to make!! Who knew you could caramelize onions in the oven!! We ate it with chips, crackers and veggies!” – Alex
Substitutions for Caramelized Onion Dip
Customize this caramelized onion and garlic dip to your liking with any of these swaps and variations:
Garlic: If you don’t have a full head of garlic, use 8-10 cloves of garlic instead. In step 7, transfer the garlic cloves to a large bowl.
Greek Yogurt: We love using full-fat Greek yogurt, but any plain Greek yogurt will do (even plain vegan yogurts!). Feel free to use 0%, 2% or 5% plain Greek yogurt or skyr yogurt for this dip.
Add a Little Spice: Like things a with a little heat? Add a few teaspoons of red pepper flakes to the dip when you combine the rest of the spices for a spicier dip.
Herbs: Once the dip is ready to serve, be sure to sprinkle it with fresh herbs. Our first choice is fresh thyme, but feel free to try fresh basil, fresh parsley, or even fresh tarragon for a fun twist!
Our Top Tips When Making This Dip
Double or triple to feed a crowd: Because you pile the onions in the middle of a baking sheet and they don’t take up too much space, feel free to double or triple the recipe to feed a crowd without adding to the prep time!
Don’t burn your onions: When roasting the onions, make sure they’re all touching each other on the pan. If there are any stragglers on the edges, they will likely burn. Keep ’em in a pile to avoid burning — it’s fool proof.
Storage
This dip disappears quickly so don’t plan on having any leftover! If you do have leftover caramelized onion dip, store it in an airtight container in the refrigerator for up to 5 days.
We don’t recommend freezing this dip to enjoy later as the texture of frozen Greek yogurt and sour cream can get icky – it’s best fresh or as refrigerated leftovers.
Make Ahead Caramelized Onion Dip
There are a couple ways to make this dip ahead of time, which can come in clutch if you’re planning for a get-together or party:
- Slice the onions and prepare the head of garlic. Place in an airtight bag (get as much air out as possible) and refrigerate for up to 2 days before roasting. When ready to make the dip, follow the recipe as written.
- Follow the recipe through step 6. Once the onions and garlic are completely cool, transfer to an airtight container and refrigerate for up to 2 days before continuing with the recipe.
Serving Suggestions
You can serve this dip hot or cold, but we prefer adding the hot onions right into the Greek yogurt mixture and eating immediately. Other ideas we’ve tried:
- As a dip: This recipe is first and foremost a creamy dip for fresh veggies, crackers, pretzels, crostini, crusty bread, you name it.
- Spread it on a sandwich: This caramelized onion dip would be a delicious addition to so many sandwiches! Add it to our breakfast sandwich or try it on your favorite deli sandwich.
- In a chicken salad: This may sound crazy, but shred some chicken and mix it with 1/2 cup to 1 cup of this caramelized onion dip for one AMAZING chicken salad. Mind blown!
Caramelized Onion Dip
Ingredients
- 3 large white onions, cut into 1/4-1/2 inch thick slices
- 3 tablespoons + 1 teaspoon olive oil
- 1.5 teaspoon salt, separated
- 1 head garlic, pointy end cut off
- 1 cup 2% Greek yogurt
- 1/4 cup sour cream
- 1.5 teaspoons Worcestershire sauce
- 1 tablespoon fresh thyme, roughly chopped
- ¼ teaspoon freshly ground pepper
Instructions
- Preheat the oven to 400ºF.
- Add the white onions to a baking sheet. Add 3 tablespoons of olive oil and 1 teaspoon of salt to the onions. Toss the onions until they are all coated in oil. Gather all of the onions to the middle of the pan so they are all in a pile. If they are spread out, they will burn.
- Run the open end of the garlic under water so that the cloves become wet. Drizzle with 1 teaspoon of olive oil and then wrap the head of garlic in tin foil. Place it on the baking sheet.
- Bake the onions for 40-50 minutes, tossing every 20 minutes until the onions are brown and caramelized.*
- While the onions are baking add the Greek yogurt, sour cream, Worcestershire, fresh thyme, the remaining salt, and pepper to a bowl and mix to combine.
- When the onions are caramelized, take a kitchen shears and cut through the onions so they are cut up into smaller pieces.
- Add the onions to the yogurt mixture and squeeze the cloves out of the garlic head. Smash the cloves with the back of a spoon and stir all of the ingredients together to combine.
- Enjoy immediately with crackers or crostini or cover and refrigerate. The dip will become more flavorful the longer it sits.
Tips & Notes
- The cook time varies by oven.
- We used white onions, but yellow or red onions will work, too.
Watch It
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
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Photography: photos taken in this post are by Erin from The Wooden Skillet.
I mean, who doesn’t want the best dip ever created. Love it. Thanks!
A nutritious meal that also tastes good is a win-win. It’s important to consider the nutritional value of the food we eat
I like it!
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Loved this idea, and the sheet tray method was clever. I subbed 1/4 cup mayo for some of the yogurt, and added paprika and thyme to the onions while they cooked. I might try it with white or yellow onions next time, since it was a tad sweet for my preference
This recipe was so delicious and so easy to make!! Who knew you could caramelize onions in the oven!! We ate it with chips, crackers and veggies!
I found this dip a little too sweet.
How does using a different type of onion affect the recipe?