Why You’ll Love This Recipe

Flavorful vegan burger featuring Impossible Beef patties or your favorite plant-based alternative.
Spicy, tangy In-N-Out inspired sauce adds a delicious kick.
Sweet, caramelized onions bring depth and balance.
Quick and easy to prepare for any burger night.
Customizable with vegan or dairy cheese.

Ingredients

In-N-Out Burger Sauce

¼ cup chopped yellow onions
1 tablespoon butter (or vegan butter)
⅓ cup mayo (or vegan mayo)
1 tablespoon relish
2 tablespoons sriracha
½ teaspoon soy sauce
¼ teaspoon onion powder
¼ teaspoon garlic powder

Burgers

¼ cup avocado oil
12 oz vegan burger patties (Impossible Beef recommended)
2 slices sharp cheddar cheese (or vegan cheese)

Onions

1 large yellow onion, sliced into 4 thick rounds
½ teaspoon salt
¼ teaspoon sugar
2 slices sharp cheddar cheese (or vegan cheese)

Directions

Make the In-N-Out sauce:
In a small skillet, melt butter over medium heat. Add chopped onions and sauté until soft and translucent, about 5 minutes. Remove from heat and let cool slightly.
In a bowl, mix mayo, relish, sriracha, soy sauce, onion powder, garlic powder, and sautéed onions until well combined. Set aside.
Caramelize the onions:
Heat a skillet over medium heat with a splash of avocado oil. Add thick onion slices, sprinkle with salt and sugar, and cook slowly until golden brown and caramelized, about 15-20 minutes, flipping occasionally. Remove from heat.
Cook the vegan patties:
Heat avocado oil in a skillet over medium-high heat. Cook vegan burger patties for about 3-4 minutes per side, until nicely browned and heated through. During the last minute, place cheese slices on top of patties and cover to melt.
Assemble the burgers:
Spread a generous amount of In-N-Out sauce on the bottom bun or plate. Place the cheesy vegan burger patty on top. Add caramelized onion slices, then the second cheese slice. Top with the other bun or serve open-faced.

Servings and Timing

Serves 2.
Prep time: 10 minutes.
Cook time: 20 minutes.
Total time: 30 minutes.

Storage/Reheating

Store leftover patties and onions separately in airtight containers in the fridge for up to 3 days.
Reheat patties in a skillet and onions gently before assembling.

Variation

Cheese options: Use pepper jack, smoked gouda, or vegan cheese for different flavors.
Add toppings: Lettuce, tomato, pickles, or avocado slices complement the burger well.
Spice level: Adjust sriracha in the sauce to your preferred heat.
Buns: Serve on gluten-free or whole grain buns, or use lettuce wraps for a low-carb option.

FAQs

Can I use other vegan patties?

Yes! Beyond Impossible, brands like Beyond Meat or homemade black bean patties work well.

Is the sauce spicy?

It has a mild to medium heat from sriracha but can be adjusted to taste.

Can I make this gluten-free?

Use gluten-free burger buns and ensure all sauces and patties are gluten-free.

How do I store leftover sauce?

Keep in an airtight container in the fridge for up to 5 days.

Can I caramelize onions ahead?

Yes, caramelized onions keep well refrigerated for 3-4 days.

Conclusion

The Flying Dutchman Burger brings together juicy vegan patties, smoky caramelized onions, and a spicy, creamy sauce for a mouthwatering vegetarian burger experience. Easy to make and fully customizable, it’s a fantastic addition to any meatless meal plan or burger night.

Flying Dutchman Burger (Vegetarian )