Caramelized Onion and Gruyere Dip

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This Caramelized Onion and Gruyere Dip is the ultimate cozy appetizer. Creamy, savory, and deeply flavorful, it layers sweet caramelized onions with rich Gruyere cheese in a hot, bubbly dip that’s pure comfort in every scoop. Whether you’re serving it for a game day snack, holiday spread, or casual gathering, it’s guaranteed to steal the show.

The golden, melty top is just the beginning. Underneath is a luscious blend of cheeses and slowly cooked onions that create a decadent contrast of sweet and savory. Serve it with baguette slices, sturdy crackers, or fresh veggies—either way, you’ll want to dig in immediately.

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What Kind of Cheese Should I Use?

Gruyere is the heart of this dip—its nutty, slightly sweet flavor melts beautifully and pairs perfectly with the onions. You can also mix in a little mozzarella for extra meltiness or add a small amount of Parmesan for sharpness. Avoid overly soft cheeses as they won’t hold up as well in the oven.

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Ingredients for the Caramelized Onion and Gruyere Dip

Yellow Onions: The key to deep caramel flavor. They need time to soften and release their natural sweetness.

Gruyere Cheese: Offers a melty texture and nutty richness that makes this dip special.

Cream Cheese: Gives the base a velvety smooth texture.

Sour Cream: Adds tang and helps balance the richness.

Butter: Used for slow-cooking the onions until perfectly golden.

Fresh Thyme (optional): Adds a lovely herbaceous touch to enhance the depth.

Salt & Pepper: Essential for seasoning, especially to balance the sweetness of the onions.

Olive Oil: Helps the onions caramelize evenly and adds flavor.

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How To Make the Caramelized Onion and Gruyere Dip

Step 1: Caramelize the Onions

In a large skillet over medium heat, add butter and olive oil. Once melted, stir in the sliced yellow onions. Cook slowly, stirring occasionally, for 25–30 minutes until the onions are deeply golden and soft. Season with a pinch of salt and pepper. If using, add a few thyme sprigs during the last 5 minutes for extra aroma.

Step 2: Prepare the Creamy Base

In a mixing bowl, combine softened cream cheese and sour cream. Beat until smooth and creamy. Add a touch more salt and pepper, then fold in half of the shredded Gruyere cheese.

Step 3: Mix in the Onions

Once your onions are beautifully caramelized, remove thyme stems and let them cool slightly. Stir two-thirds of the onions into the cheese mixture, saving the rest for topping.

Step 4: Bake the Dip

Transfer the dip mixture into a small baking dish or cast-iron skillet. Smooth the top, then sprinkle the remaining Gruyere cheese and the reserved onions over it.

Step 5: Broil for Golden Perfection

Place under the broiler for 5–7 minutes until the top is bubbling and golden brown. Watch carefully so it doesn’t burn.

Step 6: Serve Hot

Garnish with a bit of fresh thyme or parsley and serve warm with toasted baguette slices, crackers, or vegetables.

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How to Serve and Store Caramelized Onion and Gruyere Dip

Serve this dip straight from the oven while it’s warm and bubbling. It pairs best with crostini, toasted sourdough, or even crunchy celery sticks for a lighter option. This is a dip meant for sharing, and it shines brightest as the centerpiece of any appetizer spread.

Leftovers (if you’re lucky to have any) can be stored in an airtight container in the fridge for up to 3 days. Reheat in a 350°F oven until warmed through or microwave in short bursts. Stir before serving to redistribute the creamy texture.

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Frequently Asked Questions

Can I make this dip ahead of time?

Yes! You can prepare the entire dip (minus the final broil) a day ahead. Cover and refrigerate, then broil just before serving.

What if I don’t have Gruyere?

Substitute with Swiss or Fontina. While the flavor profile will shift slightly, they both melt well and still taste delicious.

Can I freeze this dip?

It’s not ideal. Cream-based dips can separate when thawed, so it’s best enjoyed fresh or refrigerated for a few days.

How do I prevent the onions from burning?

Keep your heat on medium-low and stir often. Patience is key when caramelizing onions!

Can I add other mix-ins?

Absolutely. Crispy bacon bits, sautéed mushrooms, or roasted garlic would all make tasty additions.

Is this gluten-free?

The dip itself is gluten-free, but be mindful of what you serve it with. Opt for gluten-free crackers or veggies if needed.

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Want More Dip Ideas?

If you’re a dip fanatic like me, here are a few other crave-worthy favorites you should check out next:

• Try the bold and zesty Spicy Sailor’s Dip for a flavor punch with every bite.
• Craving something creamier? You’ll love the Green Olive and Feta Cheese Dip.
• Need a touch of sweet with your savory? Check out this festive Cranberry Sauce Meatballs.
• For a nostalgic classic with a cheesy twist, the The Cheese Dip That Will Make You Famous is a must-try.
• And if you’re planning a party, the Louisiana Remoulade Sauce is a dipping dream for seafood.

Looking for more easy, flavorful recipes like this? Follow my daily recipe pins over on Pinterest @hallarecipes and save your favorites.

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Save This Pin + Share Your Results

📌 Save this recipe to your Pinterest appetizer board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you stick with Gruyere or try another cheese? Maybe you added bacon or mushrooms?

I love hearing how you personalize these recipes. Feel free to ask questions too—let’s make cooking a joy together!

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