1-Making this French Dip Pastrami Sandwich Recipe is as easy as it gets, and it’s ready in about 25 minutes total. First, gather all your ingredients and set up your workspace to keep things smooth. Start by preheating your skillet over medium heat and slicing any veggies if needed.

2-Next, sauté the mushrooms until they’re golden and soft, seasoning them with garlic salt and black pepper to taste. Once done, set them aside and use the same pan to simmer the 1 1/2 cups beef broth for a few minutes until it reduces a bit this becomes your savory au jus. Now, heat a large pan, add a bit of the 1 tablespoon butter, and toast the cut sides of the 4 hoagie rolls until they’re golden brown.

3-Evenly divide the 1 lb sliced pastrami among the rolls, then top with the 8 slices provolone cheese or 1 1/2 cups shredded mozzarella cheese and the sautéed mushrooms. Pop them in the oven at 450 degrees Fahrenheit for 4 to 5 minutes until the cheese melts and everything heats through. Finally, serve each sandwich with about 4 ounces of au jus in a ramekin for dipping. This step-by-step makes the french dip pastrami sandwich recipe with savory au jus a breeze for beginners and pros alike.