This cheesy hot French onion dip has all the best parts of French onion soup: caramelized onions, melted cheese, and warm bread. It is such a delicious appetizer your guests are going to be ooo-ing and ahh-ing with their mouths full. It would be perfect to serve on a chilly December evening.
How to make cheese onion dip
To make this dip, simply caramelize sliced onions in some butter and sherry. Then, top them with chopped Gruyere cheese, garlic, and thyme. Finally, pop it in the oven and set it to broil. It is the easiest appetizer but so special!
Note that this recipe calls for sherry-- be sure to pick up a dry sherry and not sherry vinegar which can be a common mistake if you haven't cooked with it before.
Prep ahead tips
The onions can be caramelized up to 4 days in advance and stored in an airtight container in the refrigerator. You can cube the cheese several days in advance and keep it in an airtight container in the fridge. You can slice the garlic and chop the thyme the morning of and keep those in the fridge as well. When you are ready to enjoy, reheat the onions slightly on the stovetop and then top with the cheese, garlic, and thyme and broil.
I brought this appetizer to a friends house for dinner and caramelized the onions before heading over and kept them in the cast iron skillet. I put the cheese, garlic, and thyme in a container and simply topped the onions with them when I got there and used their broiler for a few minutes. Everyone loved it!
Serve this dip with a warm baguette. Cover a baguette in foil and pop it in the oven a few minutes before the dip goes in to warm it up. When the dip is ready, serve with big pieces of bread for guests to tear apart and dip straight into the cast iron skillet. Serve the dip straight from the oven in the cast-iron skillet.
What should I serve with this dip?
There is nothing like a hot cheesy appetizer during the winter (see beer and cheese fondue). I'd recommend serving it with a good glass of wine or cranberry gin fizz cocktail. For dinner, I'd go full comfort-food mode and pair it with my easy homemade meatballs.
If you make this cheesy French onion dip, I'd love nothing more than to hear what you think in the comments below!
Cheesy French Onion Dip
- 2 tablespoon unsalted butter
- 1.5 medium yellow onions sliced
- Kosher salt
- 2 tablespoon sherry
- 1 lb gruyere cheese cut into ½ inch cubes
- 4 garlic cloves sliced
- 1 teaspoon chopped thyme leaves
- 1 baguette warmed
- Preheat the broiler to high.
- Heat a large cast-iron skillet on medium heat and melt the butter. Add the sliced onions and a pinch of salt and stir frequently for 10 minutes, or until onions are softened and just begin to caramelize.
- Turn the heat down to low. Add the sherry to the onions and stir to coat the onions. Cover with a lid and simmer for 20 minutes, or until onions are caramelized, stirring every couple of minutes and checking to make sure the onions are not burning.
- Take the onions off the heat. Evenly disperse the gruyere, garlic, and thyme on top of the onions. Broil for 5 minutes, or until cheese is melted and bubbly.
- Serve immediately with a warmed baguette.