Name: Shroom Burgers
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Yield: 4 servings
Cuisine: American
Ingredients: 4 portobello mushroom caps; olive, vegetable, avocado or canola oil; 1 tsp kosher salt; 4 eggs; 2 cups panko breadcrumbs; 1.5 cups mozzarella cheese; 0.5 cup cheddar cheese or gruyere; 0.25 tsp onion powder; 0.25 tsp garlic powder; 4 hamburger buns; 0.5 cup mayonnaise; 1 tbsp dijon mustard; 1 tsp ketchup; 1 tsp dill pickle juice; 1 pinch cayenne pepper; 1 ripe tomato; 0.5 ripe avocado; 4 pieces romaine or other crisp lettuce

Take a crispy fried portobello mushroom with loads of melted cheese, add your favorite toppings and make shroom burgers that vegetarians and meat-eaters alike will love! The panko coated, crispy-fried portobello mushroom gives a satisfying crunch, but the absolute best part is the explosion of melty cheese you get after you take your first bite. Now we get to enjoy the iconic taste of Shake Shack at home whenever we want. P.S. Don’t forget the homemade ShackSauce (recipe below)!

Dinner

1 h

American

Weelicious

March 17, 2026

Weelicious.com

From the Cook

1/7

Shroom Burgers

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Ingredients

Warning0 allergens identified

Shroom Burgers

For the shroom burgers

4 portobello mushroom capsstems sliced off

olive, vegetable, avocado or canola oil

1 tsp kosher salt

4 eggs

2 cups panko breadcrumbs

1 ½ cups mozzarella cheese

½ cup cheddar cheese or gruyereMonterrey Jack or other good melting cheese

¼ tsp onion powder

¼ tsp garlic powder

4 hamburger buns

For the Faux ShackSauce

½ cup mayonnaise(or vegan mayonnaise)

1 tbsp dijon mustard

1 tsp ketchup

1 tsp dill pickle juice(from jar of pickles)

1 pinch cayenne pepper(optional)

Topping ideas

1 ripe tomatosliced into 4 - 1/4 inch slices

½ ripe avocadopeeled and cut into 1/4 inch slices

4 pieces romaine or other crisp lettuce

Instructions

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Instructions

Preheat oven to 375°F. Place the mushrooms on a parchment lined baking sheet, rub with oil and sprinkle with salt on both sides. Place mushrooms gill side down and roast for 30-35 minutes or until slightly golden. Remove from oven and allow to cool.

Slice the mushroom caps horizontally being careful to make sure to cut directly through so both sides are even.

For the cheese filling, place the cheeses, onion and garlic powder and one egg in a medium sized bowl and stir to throughly combine. Form the mixture into 4 even sized disks just smaller than the mushrooms. Place a disk of the cheese in between each mushrooms to create a sandwich and press to secure. Refrigerate until ready to use.

Create a breading station. Place the flour in a deep bowl or pie plate. Whisk 3 of the eggs in a similar sized bowl and the panko in a third bowl.

Dredge each stuffed mushroom in the flour, then the whisked eggs and finally coating with the panko, pressing to adhere.

Heat a large sauté or cast-iron pan with 1/2 inch of oil over medium high heat (if using a candy thermometer it should read 350 degrees). Fry the burgers on each side for 3-4 minutes or until golden and crisp. Transfer the burgers to a paper towel lined plate to remove excess oil.

Make the faux ShackSauce. Place the sauce ingredients in a bowl and stir to combine.

Place a shroom burger on the bottom of a bun, top with avocado slices, tomato, lettuce and ShackSauce (if desired) then top with second bun.

Nutrition

My Calorie Intake

0
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Tips & Tricks (5)

Remove Gills for Better Texture 🍄
Gently scrape out the dark gills from the portobello caps with a spoon before breading to prevent excess moisture and ensure a crispier, more satisfying bite.
Double Breading for Maximum Crunch 🥣
Dip the mushroom in egg, then panko, then back into egg and panko again for an extra-crispy exterior that rivals any fried chicken sandwich.
Pat Mushrooms Completely Dry 🧻
After brushing off the gills, thoroughly pat the mushroom caps with paper towels to remove all surface moisture, allowing the breading to adhere perfectly and fry evenly.
Layer Cheese While Still Hot 🧀
Place cheese on the mushroom immediately after frying while it's still steaming hot, then cover briefly with a lid to ensure it melts completely and creates that signature molten center.
Toast Your Buns for Structural Integrity 🍔
Butter and lightly toast the hamburger buns until golden to prevent them from becoming soggy from the mushroom's moisture and the sauce, while adding a crucial flavor dimension.