Copycat Five Guys Veggie Sandwich Recipe

<ul class="ingredients-main-list"><li class="ingredients-single-item">2 sesame seed burger buns</li><li class="ingredients-single-item">4 slices American cheese (or dairy-free alternative)</li><li class="ingredients-single-item">150g button mushrooms, sliced</li><li class="ingredients-single-item">1 green bell pepper, sliced</li><li class="ingredients-single-item">1 medium onion, thinly sliced</li><li class="ingredients-single-item">1 tbsp vegetable oil</li><li class="ingredients-single-item">1/2 tsp salt</li><li class="ingredients-single-item">1/4 tsp black pepper</li><li class="ingredients-single-item">2 tbsp mayonnaise</li><li class="ingredients-single-item">2 tbsp ketchup</li><li class="ingredients-single-item">1 tbsp mustard (optional)</li><li class="ingredients-single-item">4 lettuce leaves</li><li class="ingredients-single-item">1 tomato, sliced</li><li class="ingredients-single-item">4 pickle slices</li><li class="ingredients-single-item">Optional: jalapeño slices, hot sauce, barbecue sauce</li></ul>

<ul class="equipment-main-list"><li class="equipment-single-item">Non-stick frying pan</li><li class="equipment-single-item">Spatula</li><li class="equipment-single-item">Baking sheet</li></ul>

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Preheat your oven to 180°C (350°F). Place your sesame seed buns on a baking sheet, cut side up, ready to toast later.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Heat the vegetable oil in a non-stick frying pan over medium-high heat. Add the sliced mushrooms and cook for about 3-4 minutes until they begin to release their moisture and start to brown. Mushrooms need space to properly brown rather than steam, so avoid overcrowding the pan.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Add the sliced green peppers and onions to the pan with the mushrooms. Season with salt and pepper. Sauté for another 5-6 minutes, stirring occasionally, until the vegetables are tender and slightly caramelized. The slow caramelization process creates the signature Five Guys flavor profile by bringing out the natural sweetness of the vegetables.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>While the vegetables are cooking, place the buns in the preheated oven for 2-3 minutes until lightly toasted. The toasting step is crucial for texture contrast and prevents the bun from becoming soggy when the juicy vegetables and condiments are added.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Remove the toasted buns from the oven. Place two slices of American cheese on the bottom half of each bun. The residual heat from the bun will help melt the cheese slightly, creating that perfect gooey foundation for your vegetables.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Divide the sautéed vegetable mixture evenly between the two sandwiches, placing them directly on top of the cheese slices. The hot vegetables will further melt the cheese, creating that signature Five Guys cheese-vegetable integration.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Spread mayonnaise, ketchup, and mustard (if using) on the top half of each bun. Layer with fresh lettuce, tomato slices, and pickles. Add any optional toppings like jalapeños or additional sauces according to your preference.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Carefully close the sandwiches, pressing down gently to compact all ingredients. If desired, wrap the bottom half in foil or parchment paper (like they do at Five Guys) to make eating easier and keep all the delicious components together. Serve immediately while the vegetables are still warm and the cheese is melty.</li></ol>