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Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe

Published: Mar 28, 2026 by Lea · This post may contain affiliate links · Leave a Comment

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If you are looking to elevate your plant-based burger game, this Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe is an absolute must-try. Imagine juicy, flavorful vegan patties smashed to perfection on a hot skillet, paired with toasted buns that add the perfect golden crunch, and topped with a delightful mix of crispy, fresh vegetables and a tangy homemade sauce. This recipe brings together simplicity and bold flavors, making it ideal for a satisfying lunch or dinner that will impress vegans and non-vegans alike. Trust me, once you try these vegan smash burgers, they’ll become your new favorite comfort food delight.

Ingredients You'll Need

The image shows a collection of food ingredients neatly arranged on a white marbled surface. There are multiple small clear glass bowls filled with black beans, brown sugar, ground spices, oats, crushed crackers, ketchup, mustard, and pickles. Nearby are two white sandwich buns placed on the side, along with a whole red tomato, a whole red onion, a small head of leafy green lettuce, and a small clear bottle of olive oil. A white plate holds four slices of bright orange cheddar cheese. A gray striped cloth is partially visible on the left side of the image. The scene is bright and clean, with natural light highlighting the textures and colors of the ingredients photo taken with an iphone --ar 4:5 --v 7

Each ingredient in this recipe is simple yet essential, contributing layers of taste, texture, and a pop of color that make these vegan smash burgers truly unforgettable. From the creamy, tangy sauce to the hearty bean and lentil patties, every component works in perfect harmony.

  • Vegan mayo: Adds rich creaminess and balances the tangy flavors in the sauce.
  • Ketchup: Brings sweetness and a classic burger vibe to the sauce.
  • Mustard: Adds a subtle sharpness that brightens the flavor profile.
  • Dill pickle relish: Offers a zesty crunch that livens up the sauce.
  • Garlic powder: Infuses a warm, savory depth throughout the patties and sauce.
  • Smoked paprika: Gives a smoky, slightly sweet undertone essential for that grilled taste.
  • Salt and pepper: Enhances and balances all flavors beautifully.
  • Canned black beans: The hearty base of the patties, providing protein and texture.
  • Cooked brown lentils: Adds a tender, earthy note and helps bind the patties.
  • Oat flour: Keeps the patties moist and holds the mixture together.
  • Breadcrumbs or panko: Aids in crispiness once smashed and cooked.
  • Soy sauce: Boosts umami flavor in the patties.
  • Nutritional yeast: Adds a subtle cheesy, nutty note.
  • Tomato paste: Brings richness and a concentrated tomato flavor.
  • Onion powder: Adds savory depth complementing the other spices.
  • Neutral oil: Perfect for achieving that crispy crust without overpowering flavors.
  • Vegan cheese slices: Melts beautifully over the patties for extra indulgence.
  • Burger buns: Toasted to add crunch and stability to hold all the layers.
  • Red onion, tomato, lettuce, dill pickles: Crisp, fresh toppings that bring contrast and color.

How to Make Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe

Step 1: Prepare the Burger Sauce

Start by combining vegan mayo, ketchup, mustard, dill pickle relish, half of the garlic powder, smoked paprika, salt, and pepper in a small bowl. This sauce is what takes these burgers from tasty to irresistibly flavorful. Pop it in the fridge to let the flavors meld together while you prepare the patties.

Step 2: Mash the Beans

Add the canned black beans to a bowl and mash them by hand with a fork or pulse briefly in a food processor. You want the texture to be chunky enough to give the patties some bite but smooth enough to bind well with the other ingredients.

Step 3: Combine the Patty Ingredients

Mix in the cooked lentils, oat flour, breadcrumbs, soy sauce, nutritional yeast, tomato paste, onion powder, remaining garlic powder, smoked paprika, salt, and pepper. Use your hands to blend everything thoroughly—this tactile step ensures the flavors are perfectly distributed and the texture holds up when cooking.

Step 4: Form and Smash the Patties

Divide the mixture into four equal balls. Heat some neutral oil in a cast iron skillet over medium-high heat. Place each ball in the skillet, then use a flat lid or spatula to smash it down to about ¼-inch thickness. This smashing is the secret trick to those delightfully crispy edges.

Step 5: Cook Until Crispy and Melty

Cook each patty for about 3 minutes until the bottom is crispy and golden. Flip the patty and immediately add a slice of vegan cheese on top. Cover the skillet to help the cheese melt perfectly as the patties cook for another 3 minutes. Repeat with all patties, filling your kitchen with mouthwatering smells!

Step 6: Toast the Buns and Prep Your Toppings

While the patties are cooking, lightly toast your burger buns to add crunch and prevent sogginess. Slice up your red onion, tomato, and get your lettuce and dill pickles ready to go. These fresh toppings add a delicious contrast to the rich, savory patties.

Step 7: Assemble Your Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe

Spread that tangy burger sauce on both halves of the toasted buns. Layer two patties per burger for more melt-in-your-mouth goodness, then top with onion, tomato, lettuce, and pickles. Press gently and get ready for a bite that’s bursting with layers of crispy, juicy, creamy, and fresh flavors.

How to Serve Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe

A woman's hand is holding a spatula under a burger patty that is dark brown and slightly crispy. On top of the patty is a bright orange square slice of cheese with three green crinkle-sliced pickle slices on it. To the right, a white bun top has an orange sauce spread on it. On the wooden white marbled surface around the burger are slices of red onion, a small glass bowl of orange sauce, torn green lettuce, a white plate with tomato halves, and a small white bowl with more pickle slices. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Simple garnishes like extra dill pickles or a few fresh pickle slices can add a sharp crunch that elevates the entire eating experience. A little extra drizzle of vegan mayo or a sprinkle of fresh herbs such as parsley or chives also looks beautiful and tastes bright alongside these rich burgers.

Side Dishes

Classic sides like crispy oven-baked fries, sweet potato wedges, or a fresh garden salad beautifully complement these vegan smash burgers. For a fun twist, try serving with a side of crunchy pickled vegetables or a tangy coleslaw to play off the smoky, savory notes.

Creative Ways to Present

Want to wow your guests? Serve these burgers on a rustic wooden board with colorful side bowls of dipping sauces and garnishes. You can also cut the burgers in half diagonally to show off the layers and make them easier to share. For a fun casual meal, offer burger-building toppings bar so everyone can customize their own Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe experience.

Make Ahead and Storage

Storing Leftovers

Store leftover patties and sauce separately in airtight containers in the fridge for up to 3 days. This keeps the textures intact and makes reheating way easier.

Freezing

The patties freeze really well! Place them on a parchment-lined tray and freeze until solid, then transfer to a freezer-safe bag. They keep for up to 2 months, so you can enjoy your favorite vegan smash burgers any time.

Reheating

Reheat patties in a skillet over medium heat to bring back their crispy crust, adding a splash of oil if needed. Toast the buns fresh and add the chilled sauce and toppings for the best flavor revival.

FAQs

Can I use other beans instead of black beans?

Absolutely! Pinto beans or chickpeas can work well too. Just make sure they are mashed well to hold the patties together.

Is it necessary to toast the buns?

Toasting the buns is highly recommended because it adds a satisfying crunch and prevents the buns from getting soggy with the sauce and toppings.

What if I don’t have oat flour?

You can substitute with other gluten-free flours like chickpea flour or almond flour. Just be mindful that texture might slightly vary.

Can I make this recipe nut-free?

Yes! This recipe is naturally nut-free since it uses oats, beans, and lentils. Just ensure your bread and other ingredients fit your dietary needs.

How do I get a crispy crust on the patties?

Use a hot cast iron skillet and smash the patties thin with a spatula or flat lid. The combination of oil and direct contact with the pan creates that perfect crispy edge.

Final Thoughts

I can’t recommend this Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe enough if you want a wholesome, comforting plant-based meal that doesn’t compromise on flavor or texture. From the crunchy smashed patties to the creamy, tangy sauce and fresh veggies, every bite feels like a delicious celebration. Trust me, once these burgers hit your kitchen, they’re going to become a beloved staple you’ll keep making again and again.

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Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe

Vegan Smash Burgers with Toasted Buns and Crispy Toppings Recipe


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3.8 from 13 reviews

  • Author: Lea
  • Total Time: 34 minutes
  • Yield: 2 burgers (4 patties, 2 per burger)
  • Diet: Vegan
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Description

This Ultimate Vegan Smash Burgers recipe delivers a deliciously crispy, flavorful plant-based burger made from black beans, lentils, and oat flour, complemented by a tangy vegan mayo sauce and fresh toppings. Perfect for a quick and satisfying vegan meal.


Ingredients

Vegan Burger Sauce

  • ¼ cup vegan mayo
  • 1 tablespoon ketchup
  • 1 tablespoon mustard
  • 1 teaspoon dill pickle relish
  • ½ teaspoon garlic powder
  • ½ teaspoon smoked paprika
  • ½ teaspoon salt
  • ¼ teaspoon pepper

Burger Patties

  • 1 (15-ounce) can black beans
  • ½ cup cooked brown lentils
  • ½ cup oat flour
  • ¼ cup breadcrumbs or panko
  • 2 tablespoons soy sauce
  • 1 tablespoon nutritional yeast
  • 1 tablespoon tomato paste
  • ½ teaspoon onion powder
  • 1 teaspoon garlic powder (divided: ½ tsp in sauce, 1 tsp in mixture)
  • 1 teaspoon smoked paprika (divided: ½ tsp in sauce, 1 tsp in mixture)
  • 1 teaspoon salt (divided: ½ tsp in sauce, ½ tsp in mixture)
  • ¼ teaspoon pepper (added to mixture)
  • Neutral oil, for frying

Assembly & Toppings

  • 4 slices vegan cheese
  • 2 burger buns, lightly toasted
  • ½ red onion, thinly sliced
  • 1 tomato, sliced
  • 4 lettuce leaves
  • ¼ cup dill pickles


Instructions

  1. Prepare the vegan burger sauce: In a small bowl, combine vegan mayo, ketchup, mustard, dill pickle relish, ½ teaspoon garlic powder, ½ teaspoon smoked paprika, ½ teaspoon salt, and pepper. Stir well and chill in the refrigerator until ready to use.
  2. Mash the beans: Drain and rinse the black beans, then mash them thoroughly in a bowl using a fork or pulse briefly in a food processor until broken down. Transfer to a large mixing bowl if using the processor.
  3. Mix the patties ingredients: Add the cooked brown lentils, oat flour, breadcrumbs, soy sauce, nutritional yeast, tomato paste, onion powder, remaining 1 teaspoon garlic powder, 1 teaspoon smoked paprika, ½ teaspoon salt, and pepper to the mashed beans. Mix thoroughly with your hands until all ingredients are evenly combined.
  4. Form patties: Divide the mixture into 4 equal-sized balls, shaping them just enough to handle before cooking.
  5. Heat the skillet: Add neutral oil to a cast iron skillet or heavy-bottomed pan and heat over medium-high until shimmering.
  6. Smash and cook patties: Place one ball in the skillet and press it down firmly using a flat lid or spatula until about ¼-inch thick. Cook for 3 minutes undisturbed until the edges are crispy and browned.
  7. Flip and add cheese: Flip the patty, place a slice of vegan cheese on top, cover the skillet, and cook for another 3 minutes until the cheese melts and the patty is cooked through. Repeat with remaining patties.
  8. Prepare toppings: While the patties are cooking, slice the onion, tomato, lettuce, and prepare pickles.
  9. Assemble burgers: Spread the chilled vegan burger sauce on both the top and bottom halves of the lightly toasted buns. Layer on 2 patties per bun, then top with sliced onion, tomato, lettuce, and dill pickles as desired.
  10. Serve and enjoy: Serve immediately for best texture and flavor with your favorite sides or condiments.

Notes

  • Using a cast iron skillet helps achieve the signature crispy edges of smash burgers.
  • Adjust the seasoning to your taste, especially salt and smoked paprika for more smoky flavor.
  • Oat flour can be substituted with any gluten-free flour for a gluten-free option, and use gluten-free breadcrumbs if needed.
  • You can make the patties ahead and refrigerate before cooking to make assembly faster.
  • Feel free to customize toppings with avocado, vegan bacon, or spicy sauces.
  • Prep Time: 15 minutes
  • Cook Time: 19 minutes
  • Category: Burgers
  • Method: Frying
  • Cuisine: American

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Welcome to Recipes By Lea

I spent most of my twenties working as a freelance travel photographer, bouncing between cities for weeks at a time. Lisbon, Istanbul, Bangkok, Mexico City—wherever a client needed architecture, street life, and local culture captured in a real, honest way. It was exciting and fast, but it also meant inconsistent routines and way too many meals that came from cafés, room service, or whatever I could grab between shoots.

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