The Ultimate Comfort Food: Grilled Cheese That’s Part French Onion Soup, Part Roast Beef Sandwich

By Woman's Day Kitchen

Nutty, gooey Gruyère is even tastier when melted on top of savory roast beef and sweet, fragrant sautéed onion. You'll never settle for a standard grilled cheese again after you try this affordable recipe. Photo by Steve Giralt; Food styling by Cyd Raftus McDowell; Prop styling by Megan Hedgpeth.

Related:Discover 50 surprising foods under 100 calories.

Serves:
2
Cost Per Serving: $1.87
Prep Time: 15 min
Total Time: 45 min

Nutritional Information:
(per serving)
Calories 430
Total Fat 25g
Saturated Fat 11g
Cholesterol 64mg
Sodium 840mg
Total Carbohydrate 31g
Dietary Fiber 4g
Sugars --
Protein 21g
Calcium --

Related:Find 8 calming foods that ease stress.

Ingredients
• 1 tablespoon(s) olive oil
• 1 small onion, sliced
• 1 teaspoon(s) thyme leaves
• Kosher salt
• Pepper
• 4 slice(s) (1/2-inch-thick) rye bread
• 1 tablespoon(s) melted unsalted butter or olive oil
• 1 tablespoon(s) whole-grain mustard
• 2 ounce(s) Gruyère cheese, grated
• 2 slice(s) roast beef

Related:See 15 fiber-packed foods.

Directions:
1.Heat olive oil in a medium skillet over medium heat. Add onion, season with 1/4 teaspoon each salt and pepper, and cook, covered, stirring occasionally, for 12 minutes. Reduce the heat to medium-low, stir in thyme leaves and cook, uncovered, stirring occasionally, until the onions are golden brown, 15 to 20 minutes more (add 1 tablespoon water to the skillet if the onions start sticking).
2. Brush one side of each slice of bread with butter or oil. Form sandwiches with the bread, whole-grain mustard, Gruyère cheese, roast beef, and the onion mixture. Cook the sandwiches, covered, until the bread is golden brown and crisp and the cheese has melted, 4 to 5 minutes per side.

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