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homemade French Dip Sandwich
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5 from 2 votes

French Dip Sandwich

A toasted French Dip Sandwich with melted Gruyère and a delicious homemade Au Jus is easy to make with leftover prime rib roast or deli meat!
Prep Time5 minutes
Cook Time10 minutes
Total Time15 minutes
Course: Main Course
Cuisine: American
Servings: 4 servings


Au Jus:

French Dip Sandwiches:

  • 2 French sandwich rolls split
  • 2 tablespoons butter softened
  • 1 pound roast beef leftover prime rib or sirloin roast or from deli, thinly sliced
  • 4 ounces Gruyere grated


  • Make Au Jus: Add butter (or beef drippings, if using) to saucepan and heat over medium-high heat. Add flour and stir with a whisk to combine. Allow to cook for several minutes to slightly brown the flour. Pour wine into pan, whisk to combine, and allow to cook for 1-2 minutes to allow the alcohol to burn off. Add remaining ingredients to the pan, stir to combine, and bring to a gentle simmer.
    ingredients for homemade Au Jus Recipe
  • Warm meat in Au Jus: Turn heat under Au Jus to low. Just prior to making the sandwiches, add the sliced meat to the Au Jus. The goal is to warm the meat and allow it to soak up all the flavor, but not to overly cook it.
    sliced beef warming in Au Jus
  • Prepare sandwiches: Preheat broiler to 500°F. Set open sandwich rolls on baking sheet and spread butter across surface. Broil until butter melts and edges of bread begin to brown, then remove from oven. Using tongs, remove meat from Au Jus, shake off any excess liquid, and place on rolls. Cover with shredded cheese. Broil for about 5 minutes, or just until cheese has melted.
    melted cheese on top of sliced beef
  • Serve: Transfer Au Jus to a dish with enough headroom to allow for dipping. Slice sandwiches in half and serve warm. To enjoy, dip each bite into Au Jus.
    Dipping French Dip Sandwich in au jus


If excess fat from drippings or butter remains on the top of Au Jus, a Gravy Fat Separator can be used, if desired.
Nutritional information is based on one half of a sandwich along with Au Jus.


Calories: 458kcal | Carbohydrates: 17g | Protein: 37g | Fat: 26g | Saturated Fat: 14g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Trans Fat: 1g | Cholesterol: 126mg | Sodium: 2455mg | Potassium: 440mg | Fiber: 1g | Sugar: 1g | Vitamin A: 621IU | Vitamin C: 51mg | Calcium: 642mg | Iron: 4mg