French Onion Roast Beef Sandwiches Recipe

Name: French Onion Roast Beef Sandwiches
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 tablespoon olive oil; 1 tablespoon butter plus 2 tablespoons soften for spreading on bread; 2 large yellow onions, cut in half and thinly sliced; 6 thick, 1/2-inch good quality whole grain or sourdough bread; 4 thin slices (preferable homemade) roast beef for each sandwich; 1/4 cup dry sherry wine; 1/2 cup beef broth (low-sodium); 6 slices Gruyere cheese cut in half; 2 tablespoons freshly chopped parsley; 1 tablespoon fresh thyme leaves; 1 cup leftover jus from roasting the beef

Servings: persons

1 tablespoon olive oil
1 tablespoon butter plus 2 tablespoons soften for spreading on bread
2 large yellow onions, cut in half and thinly sliced
6 thick, 1/2-inch good quality whole grain or sourdough bread
4 thin slices (preferable homemade) roast beef for each sandwich
1/4 cup dry sherry wine
1/2 cup beef broth (low-sodium)
6 slices Gruyere cheese cut in half
2 tablespoons freshly chopped parsley
1 tablespoon fresh thyme leaves
1 cup leftover jus from roasting the beef

1
["Heat oil and butter in a medium nonstick skillet over medium heat.
2
Add onion and cook stirring until lightly browned, about 15 minutes.", "Deglaze with beef broth and cook until it is absorbed, about 10 more minutes.
3
Add the dry sherry, cook stirring, until no liquid is left in the skillet and onions have caramelized to a deep brown color, mix in parsley.", "Preheat oven to 425 degrees.
4
Meanwhile, slice the bread and spread butter on one side. Place on baking sheet, buttered side up, and toast on the upper rack, until golden about 7-10 minutes. In a small sauce pan heat the leftover jus.", "To assemble; top the buttered sides with 1 half slice of cheese, then about a tablespoon of the onion mixture. Dip beef slices into hot jus and arrange 4 slices on top of onion mixture, cover with the other half of cheese.", "Return to the oven and bake until cheese has melted.
5
Serve with extra jus for dipping, if eating right away.
6
The jus can be substituted with any your favorite sauces (I love Chimichurri)."]

667

kcal

Calories

Fat

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 11 ingredients. The key ingredients include: 1 tablespoon olive oil, 1 tablespoon butter plus 2 tablespoons soften for spreading on bread, 2 large yellow onions, cut in half and thinly sliced, 6 thick, 1/2-inch good quality whole grain or sourdough bread, and more.

Yes, French Onion Roast Beef Sandwiches falls under the Soups & Stews category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!

French Onion Roast Beef Sandwiches

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions