Perfect Grilled Cheese for any day of the year
This Caramelized Onion Grilled Cheese is great for meat eaters and vegetarians. This recipe is straightforward and perfect for any day of the year. These are the top reasons why we love it:
- the exterior is golden-brown and crunchy
- the interior of the grilled cheese is soft and generously stuffed
- the cheese melts beautifully, and there's a generous amount of it
- the onion jam is homemade and keeps well
- perfect for breakfast, brunch, or lunch
How to make Caramelized Onion Grilled Cheese at home
This Caramelized Onion Grilled Cheese is made in two steps. First, make the onion jam. This recipe makes enough onion jam for four sandwiches, so feel free to store it in the fridge until needed. You will find the complete step-by-step recipe below. Here's a quick overview for easier preparation.
- Make the caramelized onion jam. Cook it on the stove.
- Cut the bread into even slices.
- Spread the onion jam over the bread.
- Arrange the cheese on top of the jam.
- Top the cheese with another piece of bread.
- Butter the bread.
- Cook the bread until golden brown and crunchy.
- Serve.
Storing
We don't recommend storing this Caramelized Onion Grilled Cheese Sandwich. Serve it while it's still hot or warm. However, feel free to store the onion jam. This recipe makes enough onion jam for four sandwiches, and you can place it in an airtight container and store it in the fridge for up to 7 days.
If you want to keep it even longer, you must pasteurize it. You can do that by filling the hot canning jars with jam. Wrap the jars with a wet kitchen towel, so the jars aren't touching. Place them into a preheated oven (at 85 °C / 185 °F) for 20 minutes. This way, the jam will be pasteurized. Remove the onion jam from the oven, remove the wet kitchen towel, and wrap the jars into a dry kitchen towel. Set aside until the jam comes to room temperature slowly, then store in a fridge for up to 3 months.
Try these delicious sandwich recipes
- Tuna Tomato Cucumber Tramezzini
- Vegan Chickpea Salad Sandwich
- Ham and Cheese Sliders with Horseradish
- Sandwich with Fried Mussels and Sour Veggies
- Sandwich with Salmon, Poached Egg and Hollandaise sauce
METHOD
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Caramelized onion jam
Add olive oil to a saucepan and place over medium-high heat. Add the onion cut into thin slices. Season with salt, thyme, and bay leaf. While stirring regularly, saute for 8 - 10 minutes or until the onion is soft and translucent.
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Caramelized onion jam
Add the sugar and honey. Reduce the heat, and cook for 6 - 8 minutes or until the sugar and onion caramelize and become golden brown. Add the balsamic vinegar and mustard. Cook over low heat for 3 - 4 minutes and remove from the heat.
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Caramelized Onion Grilled Cheese
Spread the homemade onion jam over one slice of bread. Arrange the shredded cheese on top and cover it with another slice of bread. Spread the butter on top of the bread. Place the bread with the buttered side down into the pan. Place the pan over medium heat and cook for 3 minutes or until the bottom is crunchy and golden brown. Spread the rest of the butter on top of the bread while the grilled cheese is cooking. Turn the grilled cheese and cook for 3 minutes or until the cheese melts and the bottom is golden brown.
