Nutty Gruyère cheese is complemented by piquant Dijon mustard and sweet onion jam in this elevated grilled cheese sandwich.
Ingredients
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8 (½-inch-thick) slices seeded rye bread
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3 tablespoons unsalted butter, room temperature
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3 tablespoons mayonnaise
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3 teaspoons Dijon mustard
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¼ cup onion jam or chutney
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6 ounces Gruyere cheese, shredded (2 cups)
Directions
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Make butter-mayo mixture and spread on bread:
Arrange bread in a single layer on a clean work surface. Stir together butter and mayonnaise. Spread mixture evenly onto one side of every slice (1 scant tablespoon per slice).
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Heat skillet; Flip bread and spread Dijon:
Heat a large skillet, preferably cast iron, over medium. Flip over bread on work surface (so it's plain-side up). Spread Dijon evenly onto 4 slices.
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Spread other slices with onion jam:
Spread onion jam onto remaining 4 slices and top evenly with cheese. Carefully sandwich together.
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Cook sandwiches:
Place sandwiches in skillet (in two batches, if needed). Reduce heat to medium-low; gently top sandwiches with a lid slightly smaller than skillet for even cooking. Cook, flipping once halfway through, until crisp and golden on both sides and cheese is melted, 7 to 9 minutes. Serve immediately.
Cook's Notes
Our test kitchen's pick for onion jam is The Jam Stand Sweet Wino Onion Jam, available at amazon.com.