30 minutes
A scrumptious vegetarian sandwich featuring sautéed portobello mushrooms and caramelized onions topped with melted Swiss cheese on a hoagie roll.
tablespoons
Portobello Mushroom Caps, thinly sliced
0 oz
Garlic Clove, minced
each
to taste
to taste
tablespoons
tablespoons
tablespoons
Large Onion, thinly sliced
each
Dry Marsala Wine
tablespoons
Hoagie Rolls, seeded, 8-inch
each
Swiss Cheese
slices
1. Sauté Mushrooms
Heat olive oil in a large pan over medium heat. Add thinly sliced portobello mushrooms and sauté for 2 to 4 minutes until they start to color, then stir and continue cooking until softened.
2. Season and Reduce
Add minced garlic to the mushrooms, season with kosher salt and black pepper. Pour in Worcestershire sauce and soy sauce, cooking until most of the liquid evaporates and the mushrooms are browned.
3. Caramelize Onions
Melt unsalted butter in the same pan, add thinly sliced onions with a pinch of salt. Cook for 12 to 14 minutes until deeply golden brown. Deglaze with Marsala wine or sherry vinegar, stirring until evaporated.
4. Assemble and Bake
Split hoagie rolls and layer in sautéed mushrooms and caramelized onions. Top with slices of Swiss cheese, wrap in foil, and bake in a preheated oven at 400°F (205°C) for 8 to 10 minutes until cheese is melted.
Start with fresh, high-quality portobello mushrooms. Their rich, earthy flavor is the star of this dish, so their freshness can make a significant difference. Look for firm, unblemished caps with a moist (but not slimy) texture.
Marinate the mushrooms in a mixture of olive oil, balsamic vinegar, garlic, and herbs like thyme or rosemary for at least 30 minutes. This extra step infuses the mushrooms with additional flavor and enhances their meaty texture.
Portobello mushrooms can trap a lot of dirt. Use a damp paper towel or a soft brush to gently clean them. Avoid rinsing them under water, as mushrooms are porous and can become waterlogged, affecting their ability to brown nicely.
Don't be shy with your seasoning. Salt and pepper should be added both during cooking and after, to ensure every bite is well seasoned. Consider finishing them with a touch of smoked paprika or crushed red pepper for an additional layer of flavor.
If your hoagie includes cheese, opt for a high-quality, melt-able cheese like provolone or mozzarella. Allow it to melt completely over the mushrooms by covering the pan momentarily, creating that gooey, satisfying texture.
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