You know those big, messy, double-stacked burgers you secretly crave?
This is the plant-based version you can feel really good about eating.

This Homemade Vegan Double Decker Burger is everything you want in a satisfying sandwich: hearty patties, melty dairy-free cheese, crisp lettuce, pickles, onion, and a tangy “special sauce” — all stacked high between toasty buns.

It’s made with real ingredients like black beans, oats, and sweet potato — no fake meat, no preservatives — just a clean, nourishing twist on a classic drive-thru burger.

Ingredients:

For the vegan burger patties:

• 1 can black beans, drained and rinsed

• ½ cup rolled oats

• ½ cup mashed sweet potato (or cooked quinoa)

• 1 tbsp flaxseed meal + 2 tbsp water (flax egg)

• 1 tsp smoked paprika

• ½ tsp garlic powder

• ½ tsp onion powder

• Salt and pepper to taste

• 1 tbsp olive oil (for cooking)

For the vegan “special sauce”:

• ¼ cup vegan mayo

• 1 tbsp ketchup

• 1 tsp mustard

• 1 tsp pickle juice

• Pinch of smoked paprika and salt

For the burgers:

• 8 slices whole grain or gluten-free slider buns (or 4 burger buns, split to double stack)

• 4 slices vegan cheese

• ½ cup shredded lettuce

• ½ cup dill pickles, sliced

• ½ small red onion, sliced

• Optional: tomato slices or avocado

Instructions:

1. Make the flax egg
   In a small bowl, mix flaxseed meal and water. Let sit 5 minutes until gelled.

2. Form the patties
   In a food processor, pulse black beans, oats, sweet potato, spices, and flax egg until combined but still slightly chunky. Form into 8 small patties.

3. Cook the patties
   Heat olive oil in a skillet over medium heat. Cook patties for 3–4 minutes per side until browned and crisp. Add vegan cheese in the last minute and cover to melt.

4. Mix the sauce
   Stir together all sauce ingredients in a small bowl and set aside.

5. Toast the buns
   Toast your buns or split them into three layers for a true “double decker” effect.

6. Assemble the burgers
   Spread sauce on each bun layer. Start with a bun, add lettuce, onion, and one patty. Add the middle bun layer, another patty, cheese, pickles, and top bun. Press gently and serve.

Sarah’s Tips:

• Make it gluten-free: Use gluten-free buns and certified oats.

• Meal prep: Cook extra patties and freeze for quick future burgers.

• Want it smoky? Add a dash of liquid smoke to the mix.

• No sweet potato? Mashed white beans or cooked lentils work too!

Flavorful Conclusion:

This Homemade Vegan Double Decker Burger is the best of both worlds — totally satisfying and totally plant-based. It’s stacked, saucy, and full of real-food flavor. Whether you're eating vegan full time or just want a meatless burger that actually delivers, this one’s a winner.

Nutrition (per burger, serves 4):

• Calories: 430

• Protein: 16g

• Carbs: 38g

• Fat: 22g

• Fiber: 7g

• Sugar: 4g