Caramelized Onion Dip

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A rich, savory appetizer perfect for any gathering

If you’re searching for a dip that’s both elegant and comforting, Caramelized Onion Dip is the answer. The secret lies in the slow, patient cooking of sweet onions until they turn golden and melt into a rich, jam-like consistency. Combined with cream cheese, mayonnaise, and a hint of spice, this dip offers layers of flavor that keep people coming back for more.

It’s a wonderful addition to holiday spreads, casual game nights, or as a make-ahead appetizer for entertaining.

Why You’ll Love This Dip

  • Deep, rich flavor – Slow caramelization brings out the natural sweetness of the onions.
  • Creamy and smooth – A luxurious texture that pairs beautifully with crunchy dippers.
  • Make-ahead friendly – Actually tastes better after resting in the fridge.
  • Versatile – Perfect with crackers, chips, fresh vegetables, or as a sandwich spread.

Ingredients

  • 2 very large sweet onions, chopped (about 4 cups)
  • 2 tablespoons butter
  • 1/2 tablespoon brown sugar
  • 1 1/2 tablespoons soy sauce
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon cayenne pepper
  • A pinch of salt, if needed
  • 225 g cream cheese, softened
  • 1 cup mayonnaise
  • 1/4 to 1/2 cup sour cream, to taste
  • 3 to 4 tablespoons chopped chives
  • Optional: 1/2 tablespoon buttermilk powder

Instructions

  1. Caramelize the onions
    Melt the butter in a skillet over low heat. Add the onions and cook them slowly until they soften and blend with the butter. This process can take up to an hour.
  2. Cover and stir
    For the first 20 minutes, keep the skillet covered, stirring occasionally to prevent burning and ensuring the onions stay in an even layer.
  3. Season and finish cooking
    After about 30 minutes, stir in the brown sugar, soy sauce, cayenne pepper, and black pepper. Taste and add salt if needed. Continue cooking until the onions are dark golden brown.
  4. Cool completely
    Allow the onions to cool for several hours or overnight. Do not mix them into the base while hot.
  5. Prepare the creamy base
    Beat the cream cheese with the mayonnaise until light and fluffy. Slowly add sour cream, tasting as you go to adjust the balance. If using buttermilk powder, blend it in at this stage.
  6. Combine and chill
    Stir in the cooled onions and chopped chives. Cover and refrigerate overnight for best flavor, or serve immediately if needed.

Tips for Perfect Caramelized Onion Dip

  • Low and slow is key – Rushing the caramelization will result in browned, not sweet, onions.
  • Use sweet onions – They develop the best natural flavor after caramelizing.
  • Rest before serving – An overnight rest in the fridge allows the flavors to meld beautifully.
  • Optional flavor boost – A splash of balsamic vinegar can deepen the sweetness.

Serving Suggestions

Serve this dip with:

  • Crisp crackers or pita chips
  • Tortilla chips
  • Fresh vegetables like celery, carrots, and bell peppers
  • Toasted baguette slices
  • As a spread on burgers or sandwiches

Storage

Store in an airtight container in the refrigerator for up to 5 days. Not recommended for freezing, as the texture may change.

Final Thoughts

Caramelized Onion Dip is more than just a party appetizer—it’s a flavor-packed, versatile spread that works for casual snacks or sophisticated gatherings. With its deep onion sweetness, creamy texture, and subtle spice, it’s the kind of recipe that becomes a signature dish in your entertaining repertoire.