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BBQ Veggie Sandwich

Active Time: 20 minutes
Total Time: 20 minutes
  • Vegetarian
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Big Kids Plate
Toddler Plate

Let Your Friends Try This Recipe!

Why we love it:

Have we mentioned we love a sandwich? This one layers in sweet potatoes and is BBQ spiced for a rich and satisfying winter feel.


  • 4 Portobello Mushrooms
  • 12 Red Onion
  • 2 Sweet Potatos
  • 1 Red Bell Pepper
  • 2 teaspoons Extra Virgin Olive Oil
  • 112 teaspoons Kosher Salt (divided)
  • 1 Tablespoon Chili Powder
  • 1 Tablespoon Paprika
  • 1 teaspoon Garlic Powder
  • 12 teaspoon Dry Mustard
  • 12 teaspoon Dried Thyme
  • 8 ounces Firm Mozzarella (or soft)
  • 4 Burger Buns
  • 2 cups Baby Spinach

Cooking Instructions

  • 2. SLICE

    Clean the portobello, dust off any clinging dirt and remove the stem (which you can save for stock!). Slice the cap in ½ to make it thinner - to do this, slice higher than what looks like the halfway point to take into account the cup-shaped lid.

    Slice the red onion into thin rings.

    Wash the sweet potato and peel, if desired. Slice into very thin rings - about ¼ - ⅛” inch thick so they cook quickly.

    Slice the red bell pepper into quarters.

    Toss all veggies with the olive oil and ½ teaspoon salt on a baking sheet.


    Combine the spices - 1 Tablespoon chili powder, 1 Tablespoon paprika, 1 teaspoon garlic powder, 1 teaspoon kosher salt, ½ teaspoon dry mustard, ½ dried thyme. Rub on veggies. Roast for about 10 minutes, flipping or stirring about halfway through.

  • 4. CHEESE

    Slice the mozzarella. Stack onto both sides of the buns and add them to the oven to melt.

  • 5. STACK

    When the veggies are done, build stacks that are about the size of the bun. Add the raw spinach to the cheese, add a veggie stack, close the lid.

  • 6. SERVING

    Serve as is, or with a bit or warmed BBQ sauce to dip. Add chips or crudité to the plate.

Check out our new features!


    use a lettuce bun or GF bun
    omit or try tofu slices
    omit and try dairy free cheese or hummus or avocado
    swap in and out at your leisure, we like zucchini, and butternut squash too

Kid Friendly Version

Big Kids Plate
Toddler Plate

How to Tweak This Recipe for Kids:

  • Deconstruct as needed!

For Choosy Eaters

  • Consider making a grilled cheese on a bun, maybe add hummus or avocado. Try spinach perhaps or a bell pepper. You can roast some extra yams as sweet potato fries, or try thin slices of the other vegetables too

Prep Ahead & Use It Up

  1. Make the spice blend
  2. Or go ahead and roast the veggies, reheat the stacks to assemble sandwiches
Rate this recipe:
1 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 5 (1 votes, average: 5.00 out of 5)
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