This Caramelized Onion Dip starts with three yellow onions cooked slowly in butter until they are deep golden, soft, and sweet. I stir them into sour cream and mayonnaise with Worcestershire sauce, garlic powder, and onion powder, then let the dip chill for at least an hour. It tastes like classic onion dip with a richer, sweeter onion flavor.
Set a bowl of Caramelized Onion Dip on the table and it does not last long. The long, slow cook turns the onions jammy, and that sweetness plays against the tangy sour cream and the savory Worcestershire sauce. It is rich and creamy, with a little sweetness in every bite.
This one is worth making a day ahead. The flavors deepen overnight, and the dip gets thicker and creamier as it sits. Pull it out of the fridge about 10 to 15 minutes before serving so it softens a little. Chips, crackers, pita, or cut vegetables all work well. If you are putting out a few dips, my Dill Pickle Dip and Beer Cheese Dip go well next to this one.
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💛 Why you’ll love this recipe
- About 10 minutes of active prep: most of the time is hands-off while the onions cook slowly on the stove and the dip chills in the fridge.
- Simple pantry ingredients: butter, yellow onions, sour cream, mayo, Worcestershire sauce, and a few spices are likely already in your kitchen.
- Built to make ahead: the dip needs at least an hour to chill before serving, so it is easy to make the morning or the day before a gathering.
- The flavor actually improves as it sits: those caramelized onions keep melding into the base the longer the dip chills, making it even better the next day.
- Works with almost any dipper: potato chips, pita, crackers, sliced baguette, or raw vegetables all pair well.
- Easy to riff on: stir in bacon, fresh herbs, or a pinch of cayenne and it becomes something new without much extra effort.
➡️ Ingredients
⏲ How to make this recipe
This is an overview of the recipe’s instructions. The full instructions can be found in the recipe card at the bottom of this post.
- Caramelize Onions: Melt butter in a large skillet over medium heat. Add sliced onions, sugar, and salt. Cook until onions are deep golden brown and caramelized, which may take anywhere from 20-30 minutes. If onions start to brown too quickly, lower heat to medium-low. If the pan gets dry, lower stovetop heat to medium-low and add 1 Tablespoon of water at a time to prevent burning. Stir often for even cooking. Note that caramelizing takes time; if the onions start to cook too fast, reduce the heat. Low and slow brings out the most sweetness without any bitter, burnt edges.
Use a Heavy-Bottomed Pan for Caramelizing: A heavy skillet, like cast iron, helps the onions cook evenly without hot spots that can cause burning.
- Allow Onions To Cool: Transfer caramelized onions to a plate to cool slightly.
- Mix Wet Ingredients: Meanwhile, in a medium-sized mixing bowl, mix together sour cream, mayonnaise, Worcestershire sauce, garlic powder, onion powder, and pepper until smooth.
- Combine Dip: Add the caramelized onions to the sour cream mixture. Stir until well combined.
- Chill Dip: Cover and refrigerate the dip for at least 1 hour to allow the flavors to meld.
- Serve: Garnish with fresh chives, if desired. Serve with chips, crackers, or fresh vegetables.
Serve at Slightly Cooler Than Room Temperature: Let the dip sit out for about 10-15 minutes before serving. This softens it just enough to make dipping easy without losing its creamy texture.
👉 Easy ingredient swaps
- Sour cream: Greek yogurt is a direct one-for-one swap if you want a tangier, slightly lighter base.
- Mayonnaise: If you are out of mayo, replace it with an equal amount of additional sour cream.
- Worcestershire sauce: Soy sauce works here and brings a different depth of savory flavor. For a fully vegetarian dip, look for a vegetarian Worcestershire sauce instead.
- Onion powder: Leave it out if you want the flavor to come entirely from the caramelized onions without any added sharpness from the dried spice.
- Chives: Green onions make a good substitute and bring a similar fresh bite as a garnish.
✨ Variations
- Spicy: Stir in a pinch of cayenne pepper or fold in finely diced fresh jalapeño for heat.
- Fresh herbs: Mix in chopped fresh dill or flat-leaf parsley alongside or in place of the chives for a brighter finish.
- Bacon: Fold in cooked, crumbled bacon right before chilling for a smoky layer that pairs well with the sweet onions.
- Cheesy: Stir in a handful of shredded sharp cheddar before chilling for extra richness.
- Extra onion flavor: Double the onions for an even deeper, sweeter dip. The rest of the ingredients stay the same.
〰️ How to serve
- With dippers: Potato chips, pita chips, bagel chips, crackers, or sliced baguette are all strong choices.
- With fresh vegetables: Carrot sticks, celery, sliced bell peppers, and cucumber rounds are classic pairings.
- As a topping: Spoon it over a baked potato, or set it alongside Spice Rubbed Chicken Wings as part of a larger spread.
- On an appetizer table: Place it next to Warm Marinated Olives and a cheese and cracker board for an easy, relaxed appetizer setup.
💬 FAQs
How long should the dip chill before serving?
At least 1 hour. That is how long the caramelized onions, Worcestershire sauce, and spices need to fully work into the sour cream base. The dip tastes even better after a few more hours or overnight. When you are ready to serve, pull it out of the fridge about 10–15 minutes ahead of time; at slightly below room temperature the texture softens just enough to make dipping easy without losing its creamy consistency.
Can I make this ahead of time, and how long does it keep?
Yes. This dip is made to be prepped ahead. You can prepare it up to 2 days in advance and keep it covered in the refrigerator. Leftovers keep for up to 3 days in an airtight container. Give it a stir before serving again, as the ingredients can settle while it sits.
Why do caramelizing onions take so long?
Caramelizing onions takes 20–30 minutes over medium to medium-low heat, and that time is what converts the onions’ natural sugars into deep, sweet, golden flavor. Turning up the heat to speed things along browns the outside before the inside has softened, which gives you bitter, uneven results instead of that rich sweetness. Stir often, and if the pan starts to look dry, add a tablespoon of water at a time to keep the onions from burning.
What pan works best for caramelizing onions?
A heavy-bottomed skillet, like cast iron, is my first choice because it holds heat evenly and prevents the hot spots that can cause the onions to burn in patches. A standard nonstick skillet also works; just keep the heat at medium or medium-low and stir frequently to keep things cooking evenly.
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Caramelized Onion Dip
Ingredients
- 2 tablespoons unsalted butter
- 3 medium yellow onions, thinly sliced
- 1 teaspoon sugar
- ½ teaspoon salt
- 1 cup sour cream
- ½ cup mayonnaise
- 1 teaspoon Worcestershire sauce
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- ¼ teaspoon pepper
Optional Garnish:
- 1 tablespoon chopped fresh chives
Instructions
- Caramelize Onions: Melt butter in a large skillet over medium heat. Add sliced onions, sugar, and salt. Cook until onions are deep golden brown and caramelized, about 20-30 minutes. If onions start to brown too quickly, lower heat to medium-low. If the pan gets dry, lower stovetop heat to medium-low and add 1 Tablespoon of water at a time to prevent burning. Stir often for even cooking.
- Allow Onions To Cool: Transfer caramelized onions to a plate to cool slightly.
- Mix Wet Ingredients: Meanwhile, in a medium-sized mixing bowl, mix together sour cream, mayonnaise, Worcestershire sauce, garlic powder, onion powder, and pepper until smooth.
- Combine Dip: Add caramelized onions to sour cream mixture. Stir until well combined.
- Chill Dip: Cover and refrigerate for at least 1 hour to allow flavors to meld.
- Serve: Garnish with fresh chives, if desired. Serve with chips, crackers, or fresh vegetables.
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