Looking for a uniquely delicious vegetarian burger? Try this cheesy stuffed portobello mushroom burger recipe! It takes your meatless meal to the next level!

stuffed portobello burgers
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These stuffed portobellos are super scrumptious. The combination of umami from the mushrooms with the creamy, savory, spicy filling is fantastic. Serve these stuffed mushroom caps on buns with your favorite burger toppings or eat them as an entrée with your favorite sides for an unctuous vegetarian meal inspired by jalapeño poppers.

I’ll be the first to admit that I’m not a big fan of mushrooms. But since my husband loves them, I decided I should add a few more mushroom recipes to the blog! This one was a hit the first time he tried it, so I knew I was on to something! These are great for meatless Monday or as a burger option for your vegetarian friends for your next cookout! You could easily make these on the grill if you prefer. You could also enjoy these stuffed portobello mushrooms without the bun as a simple main dish!

How to Pick Portobello Mushrooms

For this recipe you’ll need large portobello mushroom caps. When choosing portabella mushrooms, you want to select caps that are firm and not spotty. Avoid any mushrooms with mushy or soft spots. Mushrooms should be dry and not slimy.

portobello mushroom

How to Clean Portobello Mushrooms

To clean them, use a damp paper towel to wipe away any dirt from the surface of the mushroom cap. You don’t want to run them under water or they can get soggy and lose a lot of flavor.

To remove the mushroom stem, twist it with your fingers and gently tug to remove it. It should remove easily, but if it’s stuck, you can use a knife to cut it. Use a spoon to scrape the dark brown gills from the bottom of the mushroom cap, and discard. (That part is technically edible, but I find it hard to clean, so I prefer to remove it just to be safe!)

If you’re looking for other mushroom recipes, try my stuffed mushrooms or try this oyster mushroom recipe!

Stuffed Mushroom Ingredients

  • Portobello mushrooms– Look for large, firm caps without spots or blemishes.
  • Cream cheese– You can use regular or low-fat cream cheese.
  • Jalapeños– This adds a bit of heat and spice to the filling.
  • Garlic powder– This enhances the flavor of the filling.
  • Shredded white cheddar cheese– I used Cabot’s extra sharp white cheddar cheese, but you can use any kind you like.
  • Avocado– This is optional, but I like the creaminess it added to the burger.
  • Burger buns & toppings– You can use your favorite burger buns, whether that’s whole wheat or gluten-free. You can also add your favorite burger toppings, if you like.

How to Make Stuffed Mushroom Burgers