Food & Cooking Recipes Lunch Recipes Grilled Gruyere Sandwich with Onion Jam Be the first to rate & review! By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on September 5, 2018 Print Rate It Share Share Tweet Pin Email Photo: Sidney Bensimon Prep Time: 20 mins Total Time: 25 mins Servings: 4 Nutty gruyere is complemented by piquant Dijon mustard and sweet onion jam in this elevated grilled cheese. Ingredients 8 (½-inch-thick) slices seeded rye bread 3 tablespoons unsalted butter, room temperature 3 tablespoons mayonnaise 3 teaspoons Dijon mustard ¼ cup onion jam or chutney 6 ounces Gruyere cheese, shredded (2 cups) Directions 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). 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. Spread onion jam onto remaining 4 slices and top evenly with cheese. Carefully sandwich together. 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. Rate it Print