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Creamy Baked Caramelized Onion Dip

An indulgent and creamy dip made with caramelized onions and cheese, perfect for gatherings or parties.
Print Recipe
Prep Time 50 minutes
Cook Time 30 minutes
Total Time 1 hour 20 minutes
Servings: 8 servings
Course: Appetizer, Snack
Cuisine: American
Calories: 250
Ingredients Method Notes

Ingredients
  

For the Caramelized Onions
  • 2 tablespoons olive oil Used for caramelizing onions.
  • 2 large yellow onions, finely chopped The main ingredient for flavor.
  • 1 medium shallot, thinly sliced Adds complexity to the flavor.
  • 3/4 teaspoon salt To taste.
  • 1/4 teaspoon black pepper To taste.
  • 1 teaspoon granulated sugar To enhance sweetness during caramelization.
  • 3 cloves garlic, minced For added flavor.
  • pinch crushed red pepper flakes (optional) For a spicy kick.
For the Creamy Base
  • 3/4 cup full-fat Greek yogurt or sour cream Can be substituted with a lighter version.
  • 2/3 cup mayonnaise Can be swapped for non-dairy alternatives.
  • 3/4 cup finely grated hard Italian-style cheese (like Parmesan) For richness.
  • 6 ounces shredded mozzarella cheese Adds creaminess and stretch.

Method
 

Preparation
  1. Preheat your oven to 375°F (190°C). Lightly grease a small to medium baking dish and set aside.
  2. Warm the olive oil in a large skillet over medium heat. Add the onions and shallot, seasoning them with salt, pepper, and sugar.
  3. Cook slowly for about 20–25 minutes, stirring occasionally, until the onions are deeply golden, soft, and sweet.
  4. Stir in the minced garlic and crushed red pepper flakes (if using). Cook for about 1 minute until fragrant, then remove from heat.
  5. In a medium bowl, combine yogurt or sour cream, mayonnaise, grated cheese, and mozzarella. Stir until smooth and well mixed.
  6. Fold the warm onion mixture into the creamy cheese base until everything is fully incorporated.
  7. Spoon the mixture into your prepared baking dish, spreading it evenly.
  8. Bake uncovered for 22–25 minutes, or until the dip is hot, bubbly, and lightly golden on top. Broil for an extra minute or two for more color, if desired.
  9. Let the dip rest for about 5 minutes before serving. Enjoy with your favorite crackers, toasted bread, or fresh vegetables.

Notes

Serve hot with an array of dippers such as artisan crackers, baguette slices, or veggie sticks. For added elegance, drizzle with balsamic glaze.