Balsamic marinated portobello mushrooms are the perfect sub for deli slices in vegan sandwiches.

This balsamic-marinated portobello sandwich includes artichoke mayo and peppery arugula. Perfect for lunches and picnics!

An OSR Original Recipe for ridiculously good summer veggie sandwiches for when you’re over burgers (or never wanted burgers to start!).

Fun vegetarian dinner idea: Vietnamese banh mi sandwiches with portobellos, quick-pickled carrots, and spicy mayo.

Sandwich of portobello, cheese and thyme (in Spanish with translator)

Balsamic Stout Mushroom Sandwich with Chipotle Guac and Caramelized Leeks. SO good, even your meat eater friends will adore it.

Vegan Philly Cheesesteaks made with marinated portobellos, sautéed onions and peppers, and homemade vegan cheese sauce.

Get all the flavor but only about half the calories with this vegan version of the iconic Philly cheesesteak.

These juicy vegan burgers are made with hearty mushroom caps slathered in a zippy Dijon mustard sauce.

These Sheet Pan Crispy Mushroom-Parmesan Sandwiches are an amazing variation on eggplant parmesan.

These vegetarian Portobello Mushroom Gyros are seasoned with Mediterranean spices, grilled to meaty perfection, and drizzled with tzatziki.

Grilled Portobello Burgers with Blue Cheese and Onions– a terrific meatless Monday meal that’s inexpensive, quick, easy and delicious!

Portobello Philly Sandwich. Portobello, onion, and green peppers. Finished with delicious cashew cream.

Thick mushroom slabs are grilled up with smoky seasonings, stuffed into buns and piled high with toppings to make these vegan hot dogs.

An easy and delicious portobello mushroom burger topped with a creamy chile sauce.

Marinating the portobellos in balsamic is the key to making these grilled veggie wraps with red onion, red bell pepper and zucchini amazing!

A unique and grown up version of grilled cheese, Portobello Gouda Grilled Cheese.

Portobello burgers with basil goat cheese spread.

Stuffed Mushroom Grilled Cheese. Oh yes. Your favorite appetizer in one big sammich!

Juicy, giant portobello mushroom stuffed and baked with Parmesan cheesy mixture and topped with fresh pesto.

This sandwich gets a flavorful kick from grilled veggies! Portobello mushrooms hold up especially well on a grill.

Portobello Egg Sandwich