Provided by á-34480
Number Of Ingredients 10
Steps:
- 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, about 5 - 7 minutes. Reduce the heat to medium-low, stir in thyme leaves and cook, uncovered, stirring occasionally, until the onions are golden brown, (add 1 tablespoon water to the skillet if the onions start sticking). 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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massinissa djoulah
[email protected]I'm so glad I found this recipe. It's a new favorite in my household.
Ahmed Sheka325
[email protected]This sandwich is the perfect comfort food. It's warm, cheesy, and savory, and it always hits the spot.
Taeja.T Francis
[email protected]I love the way the caramelized onions add a sweet and savory flavor to this sandwich. It's a perfect balance of flavors.
Sofía Garone
[email protected]This sandwich is so delicious, it's hard to believe it's so easy to make. It's a must-try for any fan of grilled cheese sandwiches.
Robin Das
[email protected]I've made this sandwich for my friends and family, and they all loved it. It's a great recipe to have on hand for when you need a quick and easy meal.
Rainbow Unicorns
[email protected]This sandwich is perfect for a special occasion, like a birthday or anniversary. It's also a great way to show your loved ones how much you care.
Sakibu Yahuza
[email protected]I'm always looking for new and creative ways to use roast beef, and this sandwich is definitely a winner. It's a unique and delicious way to enjoy this classic ingredient.
Tim Disney
[email protected]This sandwich is so easy to make, even beginner cooks can make it. It's a great recipe for kids to learn how to cook.
Lucy Bruyneel (Lucy)
[email protected]I've tried several different variations of this sandwich, and my favorite is to add a slice of avocado. It adds a creamy texture and a bit of healthy fat.
Fg Jihad
[email protected]I love that this sandwich can be made with leftover roast beef. It's a great way to use up leftovers and create a delicious new meal.
Tuyel Ahmed
[email protected]This sandwich is perfect for a quick and easy lunch or dinner. It's also great for parties or potlucks.
Beki Mekonen
[email protected]I've made this sandwich several times now and it's always a crowd-pleaser. Everyone loves the combination of flavors and the fact that it's so easy to make.
Marcel Kola
[email protected]This sandwich is the perfect comfort food. It's warm, cheesy, and savory, and it always hits the spot.
Anyi Chuks
[email protected]I'm not a big fan of roast beef, but this sandwich was so good that I ate the whole thing! The caramelized onions and melted cheese were the perfect complement to the beef.
Mohamed Elkady
[email protected]I made this sandwich for lunch today and it was delicious! The combination of flavors was amazing and the sandwich was really easy to make.
Natalie Cruz
[email protected]This French onion roast beef grilled cheese sandwich was a hit with my family! The flavors of the caramelized onions, melted cheese, and tender roast beef were perfect together.