The Portobello French Dip with Horseradish Aioli is a satisfying vegetarian twist on the classic French dip sandwich. Thick, meaty portobello mushrooms are seasoned and seared to perfection, giving them a hearty texture that pairs beautifully with melted cheese and crusty bread. The sandwich is elevated with a bold horseradish aioli for a bit of heat, while the savory mushroom jus serves as a perfect dipping sauce, capturing all the rich, umami flavors. This sandwich is perfect for both vegetarians and meat-lovers alike, offering a delicious and hearty meal that’s packed with flavor.
Ingredients:
For the Sandwich:
- 4 large portobello mushroom caps, cleaned and stems removed
- 2 tbsp olive oil
- 1 tbsp soy sauce
- 1 tsp balsamic vinegar
- 1/2 tsp garlic powder
- 4 slices provolone or Swiss cheese
- 4 hoagie rolls or baguettes, split
For the Horseradish Aioli:
- 1/2 cup mayonnaise
- 1 tbsp prepared horseradish
- 1 tsp lemon juice
- Salt and black pepper, to taste
For the Mushroom Jus:
- 1 cup vegetable broth
- 1 tbsp soy sauce
- 1 tbsp Worcestershire sauce (vegetarian version if needed)
- 1 clove garlic, minced
- Salt and black pepper, to taste
Instructions:
- Prepare the Mushrooms:
- In a small bowl, mix olive oil, soy sauce, balsamic vinegar, and garlic powder. Brush the mushroom caps with the mixture, coating both sides. Let them marinate for 10-15 minutes.
- Cook the Mushrooms:
- Heat a skillet over medium-high heat and sear the portobello mushrooms for 3-4 minutes per side, until tender and slightly browned. Add the provolone or Swiss cheese slices on top of the mushrooms during the last minute of cooking and cover to allow the cheese to melt.
- Make the Horseradish Aioli:
- In a small bowl, whisk together the mayonnaise, prepared horseradish, lemon juice, salt, and pepper. Set aside.
- Prepare the Mushroom Jus:
- In a saucepan, combine the vegetable broth, soy sauce, Worcestershire sauce, and minced garlic. Simmer for 5-7 minutes to allow the flavors to meld, then season with salt and pepper to taste.
- Assemble the Sandwiches:
- Spread the horseradish aioli on the inside of the split hoagie rolls or baguettes. Place the cooked portobello mushrooms with melted cheese inside the rolls.
- Serve:
- Serve the sandwiches warm with the mushroom jus on the side for dipping.
The Portobello French Dip with Horseradish Aioli is a deliciously savory sandwich that offers all the classic French dip flavors in a hearty, vegetarian form. The rich mushroom jus and tangy aioli make it an unforgettable meal!
