Jul 17 2026
Restaurants›The Toasted Frog›Portobello Mushroom Philly Recipe

Portobello Mushroom Philly Recipe

Inspired by The Toasted Frog
Time1h
Serves2

Marinated portobello mushroom caps, grilled, bell peppers, red onions, cheddar cheese, chipotle aioli, toasted in the wood-fired oven on house-made bread with choice of starch

Jump to Recipe

Was this page helpful?

Help improve this recipe for others.

Send this recipe to your inbox.

We'll email it straight to you - plus weekly cooking inspiration.

Ingredients

Some product links may be affiliates. If you buy through them, you're supporting the site and Pekin may earn a commission at no extra cost to you.

Main Ingredients

Method

Preparation Steps

  1. 1

    Marinate the Mushrooms

    In a bowl, combine olive oil, balsamic vinegar, garlic, soy sauce, salt, and pepper. Add the portobello caps and marinate for at least 30 minutes.

  2. 2

    Prepare the Vegetables

    Slice the bell peppers and red onion into thin strips. Sauté them in a pan over medium heat until softened.

  3. 3

    Grill the Mushrooms

    Preheat the grill. Grill the marinated portobello caps for about 5-7 minutes on each side until tender.

  4. 4

    Assemble the Philly

    On a slice of house-made bread, layer the grilled portobello mushroom, sautéed bell peppers, red onions, and cheddar cheese. Spread chipotle aioli on another slice and place on top.

  5. 5

    Toast the Sandwich

    Toast the assembled sandwich in a wood-fired oven or a hot skillet until the bread is golden and the cheese has melted.

More from The Toasted Frog