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Vegetarian French Dip Sandwich

A hearty and flavorful vegetarian sandwich packed with roasted portobello mushrooms, sautéed onions, and savory sauces, perfect for a satisfying meal.
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Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 4 sandwiches
Course: Lunch, Main Course
Cuisine: American, Vegetarian
Calories: 350
Ingredients Method Notes

Ingredients
  

Filling Ingredients
  • 4 large portobello mushrooms Cleaned and stems removed
  • 1 tablespoon olive oil For roasting mushrooms
  • 1 onion, sliced For sautéing
  • 2 cloves garlic, minced For flavor
  • 1 cup vegetable broth For moisture and flavor
  • 2 tablespoons soy sauce Adds umami flavor
  • 1 tablespoon balsamic vinegar For a touch of acidity
  • 1 teaspoon dried thyme For herb flavor
  • to taste Salt and pepper Adjust according to preference
Sandwich Assembly
  • 4 hoagie rolls For sandwich base
  • Fresh parsley for garnish (optional) Add freshness to the dish

Method
 

Preparation
  1. Preheat oven to 400°F (200°C).
  2. Clean the portobello mushrooms and remove the stems.
  3. Brush them with olive oil and place them on a baking sheet.
  4. Roast the mushrooms in the preheated oven for about 15-20 minutes until tender.
Cooking
  1. In a skillet over medium heat, add olive oil and sauté the sliced onion until translucent.
  2. Add minced garlic and cook for another minute.
  3. Stir in the vegetable broth, soy sauce, balsamic vinegar, thyme, salt, and pepper.
  4. Let it simmer for about 5-7 minutes.
Assembly
  1. Assemble the sandwiches by placing a roasted mushroom in each hoagie roll and drizzling with the au jus.
  2. Serve immediately, with extra au jus for dipping.

Notes

Store any leftover sandwiches in an airtight container in the fridge. To reheat, warm them in the oven or microwave until hot. Clean mushrooms well before roasting and feel free to add more veggies like peppers or spinach for extra nutrition. Adjust salt and pepper to fit your taste. Use different kinds of rolls if you prefer.