One of our favorite comfort foods—French onion soup—meets crowd-pleasing grilled cheese in a sandwich that’s got the flavors of both dishes, minus a lot of the traditional sodium and sat fat. Silky caramelized onions are the star here: their pungent, concentrated flavor means that just a touch of Gruyere is more than enough to make this sandwich sing. The other key? Shaving the cheese with a Microplane, which allows the cheese to distribute its melty goodness evenly, and makes just a bit of cheese feel like a lot.

Kaylee Hammonds
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Read the full recipe after the video.

Recipe Summary

20 mins
20 mins
Serves 4 (serving size: 1 sandwich)


Ingredient Checklist


Instructions Checklist
  • Spray a skillet with nonstick spray. Place four slices of bread in pan over medium-low heat.

  • Top each bread slice with 1/4 cup caramelized onions and 1/4 cup cheese. Sprinkle each sandwich with 1/4 tsp fresh thyme.

  • Heat on medium-low until the bread is toasted, onions are heated through, and cheese begins to melt. Top with additional bread slice.

  • Flip each sandwich over and heat until cheese is melted and bread is toasted. Serve immediately.

Nutrition Facts

260 calories; fat 7g; saturated fat 2.5g; protein 12g; carbohydrates 38g; fiber 3g; sugars 9g; added sugar 0g; sodium 400mg; calcium 0 20% DV; potassium 0 8% DV.