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Creamy Baked Caramelized Onion Dip

A rich and warm dip with sweet caramelized onions, perfect for parties or cozy nights in. This recipe offers a lighter option using Greek yogurt for a healthy dip.
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Prep Time 25 minutes
Cook Time 25 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Appetizer, Snack
Cuisine: American
Calories: 120
Ingredients Method Notes

Ingredients
  

For the Dip
  • 2 tablespoons olive oil
  • 2 large yellow onions, finely chopped
  • 1 medium shallot, thinly sliced
  • 3/4 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1 teaspoon granulated sugar
  • 3 cloves garlic, minced
  • pinch crushed red pepper flakes (optional)
  • 3/4 cup full-fat Greek yogurt or sour cream For a lighter option, use Greek yogurt.
  • 2/3 cup mayonnaise
  • 3/4 cup finely grated hard Italian-style cheese
  • 6 ounces shredded mozzarella cheese

Method
 

Preparation
  1. Preheat the oven to 375°F. 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, then season with salt, pepper, and sugar. Cook slowly for about 20–25 minutes, stirring occasionally, until the onions are deeply golden, soft, and sweet.
  3. Stir in the garlic and red pepper flakes, if using, and cook for about 1 minute until fragrant. Remove the skillet from heat.
  4. In a medium bowl, combine the yogurt or sour cream, mayonnaise, grated cheese, and mozzarella. Stir until smooth and evenly mixed.
  5. Fold the warm onion mixture into the creamy cheese base until fully incorporated.
  6. Spoon the mixture into the prepared baking dish and spread it evenly.
  7. Bake uncovered for 22–25 minutes, or until the dip is hot, bubbly, and lightly golden on top. For extra color, broil briefly at the end if desired.
  8. Let the dip rest for about 5 minutes before serving. Enjoy warm with crackers, toasted bread, or fresh vegetables.

Notes

Storage: Store leftovers in an airtight container in the fridge for 3–4 days. Reheat in the oven at 325°F until hot. Freezing is possible but may change texture. Use Greek yogurt for a healthier option.