Grilled Portobello Sandwich with Sun-Dried Tomato Pesto

Thanks for being patient with my irregular posting schedule. It is summer and I have been feeling a little scatterbrained and honestly, the last place you want to be on a hot day is in a hot kitchen. I love you guys, but I don’t do well in the heat.

Over the weekend Mike and I went on a little getaway to celebrate our anniversary. It was a belated and delayed celebration since we were married in June, but it was a nice getaway none the less! We spent the day at the pool and then went to dinner and ate way too much steak and then, even though we were full, we had to get dessert. We then went to bed early and woke up late. We indulged in a little breakfast room service. Can you believe Mike and I have never ordered room service before? It was amazing to literally eat breakfast in bed.

I know you are super jealous of our very exciting weekend. Ha. But that is why I didn’t have a chance to post anything for you on Monday. Once again, sorry.

As a married person, I have to give a shout out to one of my favorite blogs, Dessert for Two. Christina makes dinners and desserts for two. It is sometimes hard to come up with meals for just the two of us. I seriously cannot cook for just two; I always make way, way too much food.

Christina’s blog inspired me to come up with easy and healthy grilled sandwiches for two people. Surprisingly, Mike was all about this sandwich. I know, shocking. He liked something that wasn’t all about meat or cheese. This is a quick sandwich to toss on the grill along with some summer corn or zucchini. Boom, dinner is done!

Grilled Portobello Sandwich with Sun-Dried Tomato Pesto

Course Sandwich
Prep Time 10 minutes
Cook Time 12 minutes
Total Time 22 minutes
Servings 2
Author Sarcastic Cooking


  • For the Marinade:
  • 2 Tablespoons Balsamic Vinegar
  • ¼ Cup Olive Oil
  • ¼ Teaspoon Crushed Red Pepper Flakes
  • ¼ Teaspoon Garlic Powder
  • 1 Teaspoon Salt
  • ½ Teaspoon Black Pepper
  • 2-3 Dashes of Worcestershire Sauce
  • For the Pesto:
  • ½ Cup Chopped Sun-Dried Tomatoes in Oil slightly drained
  • 2 Tablespoons Walnuts
  • 1 Tablespoon Finely Grated Parmesan Cheese
  • 1 Tablespoon Chopped Parsley
  • 3 Tablespoons Olive Oil
  • Pinch of Salt and Pepper
  • For the Sandwich:
  • 2 Large Portobello Mushrooms stems removed
  • 2 Slices of Sourdough Bread
  • ¼ Cup Shredded Mozzarella


  1. Add all of the marinade ingredients to a gallon-sized plastic storage bag. Seal the bag and shake to mix the marinade. Add the mushrooms to the bag, seal, and let marinate while the grill heats up and you make the pesto.
  2. Heat the grill for a few minutes over medium heat.
  3. To make the pesto, add the sun-dried tomatoes and walnuts to a food processor. Pulse a few times until the walnuts and tomatoes are about the size of peas.
  4. Add the cheese, parsley, salt, and pepper to the food processor. Puree for a minute or so while pouring in the olive oil. Puree until the pesto comes together into a thick paste. Set off to the side for later.
  5. Remove the mushrooms from the marinade and add them to the grill. Grill the mushrooms for 6-8 minutes on each side. Turn the mushroom 90 degrees halfway through to get good grill marks on each side.
  6. While the mushrooms are cooking, cut each slice of bread in half. Spread a heaping tablespoon of the pesto on two half slices. Place equal amounts of the shredded cheese on the other two halves. Place each slice of bread on the grill with the topping side up. Grill the bread for about five minutes until lightly golden.
  7. Once the mushrooms are grilled, add them to the pesto slice of bread and top with the cheese topped slice. Serve right away.

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  • Jennie @themessybakerblog
    July 22, 2013 at 8:48 am

    It sounds like you had a relaxing weekend. Happy belated anniversary. This sammie looks amazing. I love portobello mushrooms.

  • Shashi @
    July 18, 2013 at 7:55 am

    Sundried tomato pesto sounds and looks simply delicious! Beautiful pictures of a gorgeous sandwich!

  • Stephie @ Eat Your Heart Out
    July 17, 2013 at 7:35 pm

    Oh hey, I totally have been meaning to make sundried tomato pesto for like WEEKS now. Creepy brain waves again.

    I love that Mike loved this sandwich. We’re converting him to veggies! Bahaha.

    • Stefanie
      July 17, 2013 at 7:41 pm

      You need to get your man on board with these too! Maybe add a burger under the mushroom though to ease him into the veggie-ness!

  • Sadye
    July 17, 2013 at 3:56 pm

    Looks delicious! And it sounds like you had a well-deserved weekend off. No apologies for the delay!

  • Becca @ Amuse Your Bouche
    July 17, 2013 at 12:08 pm

    Oh wow this looks incredible. This is exactly the sort of thing I’d make. Pinning!

  • Susan
    July 17, 2013 at 11:23 am

    I’m currently in love with sun-dried tomato pesto. I could put that on everything.

  • Karla @ Foodologie
    July 17, 2013 at 10:48 am

    Just e-mailed this to the BF and said “let’s make this this weekend!”


  • Colleen
    July 17, 2013 at 10:03 am

    I seriously need this in my belly right now.

    • Stefanie
      July 17, 2013 at 10:09 am

      Dooooo it!

    • Colleen
      July 22, 2013 at 9:34 am

      I made this for dinner last night and it was fantastic. I made a sandwich with a chicken breast instead of a mushroom for my meat-loving wife and she loved hers as well.