Caramelized French Onion Dip with Crispy Panko Parmesan Topping
This crispy, creamy, hot caramelized French onion dip will be the first thing gone if you bring it to a party. Sweet onions cook low and slow until deep golden and jammy, then get folded into a creamy base of cream cheese, sour cream, mayo, sharp white cheddar, mozzarella and Parmesan. A buttery panko Parmesan topping bakes up golden and crunchy on this baked French onion dip.
Serve it with sturdy bread or crackers for scooping. For more party dips, try my Goat Cheese & Roasted Tomato Dip and Mexican Street Corn Dip.
Why You’ll Love This French Onion Dip
- Real caramelized onions, not a soup packet.
- Three cheeses for a creamy, melty dip.
- Crispy panko Parmesan topping for crunch.
- Make-ahead friendly for parties and game days.
Ingredients for Caramelized French Onion Dip
The Caramelized Onions
Sweet onions, butter, olive oil, kosher salt, Worcestershire, balsamic vinegar, garlic and optional fresh thyme.
The Creamy Dip Base
Softened cream cheese, sour cream, mayo, shredded sharp white cheddar, mozzarella, Parmesan and black pepper.
The Crispy Topping
Panko, melted butter and Parmesan.
Swap note: Use gluten-free panko for a gluten-free dip. Dried thyme works if you do not have fresh.
How to Make French Onion Dip
Step 1: Caramelize the onions
Melt the butter with olive oil in a wide pan over medium-low heat. Add the onions and salt and cook 35 to 45 minutes, stirring often, until deep golden and jammy.
Step 2: Finish the onions
Add the garlic, balsamic, Worcestershire and thyme in the last 2 to 3 minutes.
Step 3: Make the dip base
Stir the cream cheese, sour cream and mayo until smooth. Fold in the cheddar, mozzarella, Parmesan, plenty of black pepper and the caramelized onions.
Step 4: Add the topping
Spread the dip into a baking dish or cast iron skillet. Mix the panko, melted butter and Parmesan and sprinkle over the top, pressing in lightly.
Step 5: Bake
Bake at 400°F for 20 to 25 minutes until bubbling and golden. Broil 1 to 2 minutes for extra crunch, watching closely. Let it sit 5 minutes before serving.
Carly’s Expert Tips
- Don’t rush the onions. Low heat and time make them sweet and jammy.
- Soften the cream cheese so the dip base is smooth with no lumps.
- Watch the broiler. The panko goes from golden to burnt quickly.
- Rest before serving so the dip thickens slightly.
Make It Your Own
- Bacon: Fold in crispy chopped bacon.
- Gruyère: Swap the cheddar for Gruyère for a French onion soup vibe.
- Cold dip: Skip baking and chill for a classic cold onion dip.
- Spicy: Add a pinch of cayenne or chopped jalapeño.
Make-Ahead and Meal Prep: Caramelize the onions and mix the dip base up to 2 days ahead. Spread it into the baking dish, add the topping right before baking and add a few extra minutes to the bake time.
What to Serve With French Onion Dip
Serve with toasted baguette, sturdy crackers, kettle chips or veggies. It is perfect alongside Cowboy Caviar on a game day spread.
Storing and Reheating
Store leftovers covered in the fridge for up to 4 days.
Reheat in a 350°F oven until hot, about 10 to 15 minutes. The topping will soften a bit.
What People Ask About French Onion Dip
Can I make French onion dip ahead of time?
Yes. Prepare the onions and dip base up to 2 days ahead, then top and bake before serving.
How long does it take to caramelize onions?
Plan on 35 to 45 minutes over medium-low heat.
What onions are best for French onion dip?
Sweet onions like Vidalia caramelize beautifully and are naturally sweet.
What do you serve with hot French onion dip?
Toasted bread, crackers, chips and fresh veggies.
Caramelized French Onion Dip with Crispy Panko Parmesan Topping
Ingredients
Method
- Melt butter and olive oil together in a wide pan over medium-low heat. Add onions and salt and cook for 35–45 minutes, stirring frequently, until they’re deep golden and jammy.
- Add garlic, balsamic vinegar, Worcestershire sauce, and thyme in the last 2–3 minutes of cooking.
- Stir cream cheese, sour cream, and mayo together until smooth.
- Fold in shredded sharp white cheddar, mozzarella, parmesan, and a good amount of black pepper.
- Add the caramelized onions and fold everything together.
- Spread the mixture into a baking dish or cast iron skillet.
- Mix panko, melted butter, and parmesan together. Sprinkle evenly over the top, pressing in lightly.
- Bake at 400°F for 20–25 minutes until bubbling and golden. Broil for 1–2 minutes at the end for extra crunch and color, keeping a close eye.
- Let the dip sit for 5 minutes before serving so it thickens slightly.
Nutrition
Notes
- Use fresh thyme for a more aromatic flavor, but dried thyme works as a substitute.
- Broil the topping briefly for extra crunch, but watch closely to avoid burning.
- Serve with sturdy bread or crackers to scoop up the creamy dip.
