Lunch Idea

Apple Balsamic Onion Grilled Cheese

This Apple Balsamic Onion Grilled Cheese sandwich is a quick and easy meal bursting with amazing flavors. Sweet balsamic onions pair with crispy sweet apples and melted cheddar cheese for a vegetarian recipe that is filling and delicious.

  • Prep5 minutes
  • Cook15 minutes
  • Total20 minutes
  • Serves2

Published 16 Sep 2021

Grilled sourdough sandwich with cheddar, apples and onions

This Apple Balsamic Onion Grilled Cheese sandwich is a quick and easy meal bursting with amazing flavors. Sweet balsamic onions pair with crispy sweet apples and melted cheddar for a vegetarian recipe that is filling and delicious.

Grilled sourdough sandwich with cheddar, apples and onions

Cheddar & Apple Grilled Cheese Sandwich

An apple and balsamic onion grilled cheese turns a run of the mill grilled cheese sandwich into a work of art. It is like the poetic expression of a grilled cheese sandwich. The way the apple adds crunch and a bit of sweet, then with the balsamic onions bringing such a savory depth to everything… just amazing!

Grilled cheese with apples and balsamic onions on cutting board

Apple & Cheese Recipe

If you have ever had or made a cheese and fruit platter, then you know how well cheese tastes with a bit of apple. Nothing about either the cheese or the apple suggests they would do well together. But together they just make each other taste even better.

From pungent cheeses combined in this Bacon, Bleu Cheese & Apple Flatbread to classic cheddar in Zesty Cheddar Fondue with apple and bread dippers, the flavor combination is undeniably good.

Even a basic, mass produced, and not artisanal cheddar gains flavor and tastes better with a nice crisp and tart slice of apple.

Bring in the balsamic reduced into the grilled onions, and you set up the umami with that edge of sour. At this point, the parts are in motion to take the classic grilled cheese and put it over the top.

apple on mandolin being sliced
Grilled cheese with balsamic onions and apples

How to Make The Perfect Grilled Cheese Sandwich

A perfect grilled cheese sandwich can make a rainy day feel like the sun is just about to break through. It is an ideal comfort food that way. There are a couple of tips to make sure everything grills perfectly.

Because a grilled cheese gets assembled during the grilling, here are some ways to make it successful every time.

Spread the butter on the pieces of bread first. This method works better than melting the butter in the pan first because then you don’t end up with any excess butter scorching and affecting the taste in the process.

Make sure your cheese is consistently sliced so that all the cheese melts at the same time and you can flip them at the same time. Nothing worse than making one perfect sandwich and the other coming out a bit burned. Sure, you can scrape the bread if it burns a little… but wouldn’t you rather not have to do that?

Put the apples and onions on to the bread with the cheese so the moisture from the apples and onions doesn’t drench the bread. Add a bit more cheese on top of the apples and onions. It will melt enough on the hot onions to help hold the grilled cheese together when you flip it. Then you will also still have a cheese wall to keep the bread nice and toasted and not soggy after the flip.

Do one flip to toast the other side of the bread, then add one more flip to make sure everything is toasting nicely. You can tamp it down too with a spatula to make sure everything is nice and cozy in that melt of cheese.

Half of grilled cheese with apples and onions on cutting board

What Makes Balsamic Vinegar The Right Choice?

Why do I suggest balsamic vinegar and not rice vinegar, red wine vinegar, or something else? Balsamic has a great complexity of flavor and it also tends to be less acidic than other vinegars. It can even have a touch of sweetness.

True balsamic vinegar is aged at least 12 years, so when you see a very expensive balsamic vinegar now you know why. However, with the ingenuity of modern science and culinary experimentation, now “balsamic style” vinegars can be produced much more quickly and still yield pretty similar results.

Why Sharp Cheddar Cheese?

Sharp cheddar has a big enough flavor to stand up to the balsamic, onions, and apples without being too overpowering.

The only difference between standard cheddar and sharp cheddar is the amount the cheese has aged. As a cheese ages it becomes “sharper” as the cheese dries and the flavor intensifies.

If you don’t like your cheddar too sharp, then all good, use the style of cheddar you like best.

Sourdough in skillet topped with cheddar and balsamic onions
Sourdough grilled cheese with apples, balsamic onions and cheddar stacked on wood platter

What Kind Of Apple Works Best?

I recommend a granny smith or honey crisp. Both those apples have great crunch and tons of flavor. They both hold up well to a little heat. If neither of those are readily available, then you can certainly go with a Braeburn or Pink Lady too.

Any apple that is suggested for baking makes a great apple on this grilled cheese sandwich. You want to avoid apples like Red Delicious that will soften and become mushy very quickly.

cutting board with halves of grilled cheese with apples and onions

More Unique Grilled Cheese Recipes

Plain grilled cheese sandwiches are not the only way to enjoy grilled cheese. (After all, what is pizza if not in a sense an open faced grilled cheese sandwich right?) I have some recipes to expand on the idea of grilled cheese as truly… a work of art.

Raspberry Basil & Brie Grilled Cheese

Caprese Grilled Cheese

Grilled sourdough with melted cheddar, onions and apples

Serving: 1 g | Calories: 747 kcal | Carbohydrates: 81 g | Protein: 26 g | Fat: 36 g | Saturated Fat: 20 g | Polyunsaturated Fat: 11 g | Trans Fat: 1 g | Cholesterol: 91 mg | Sodium: 1215 mg | Fiber: 4 g | Sugar: 16 g

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