• 8 Ingredients
  • 3 tablespoons unsalted butter, s...
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  • 1 tablespoon extra-virgin olive oil
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  • 1 large onion, halved and thinly...
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  • Salt and freshly ground pepper
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  • Eight 1/2-inch-thick slices of w...
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  • Show all (8)
  • Nutrition 100% match
  • Calories per gram: 0.4
  • Total fat: High
  • Show all
  • 8 Ingredients
  • Dijon mustard , to taste
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  • 8 slices whole grain bread
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  • 8 ounces gruyere cheese , thinly...
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  • salt & freshly ground black pepper
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  • 3 tablespoons unsalted butter ,...
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  • Show all (8)
  • Nutrition 100% match
  • Calories per gram: 1.0
  • Total fat: High
  • Show all

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