In-N-Out Smash Burger Tacos | Provecho

In-n-out Smash Burger Tacos

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35 min

Posted on Aug 31, 2025

I

itsvegansis

2 servings

In-N-Out Smash Burger Tacos

2 servings

Ingredients

F

For the Burgers:

p

16 oz plant based ground beef, thawed

S

Salt and black pepper

F

For the Caramelized Onions:

l

1 –2 large yellow onions

o

1 tbsp oil

s

½ tsp salt

F

For the In N Out Sauce:

p

½ cup plain vegan yogurt

v

¼ cup vegan mayo

k

¼ cup ketchup

c

2 tbsp caramelized onions

s

½ tbsp sweet relish

d

½ tbsp dijon mustard

d

1 tbsp distilled white vinegar

s

1 tsp soy sauce, optional

F

For the Tacos:

s

4 six inch flour tortillas

v

4 slices vegan American cheese or Cheddar slices

s

1 cup shredded lettuce

R

Remaining caramelized onions

Directions

1

For the Caramelized Onions:

1

Finely chop the onions. Heat 1 tbsp oil in a large skillet over medium heat, then add the onions and salt. Reduce the heat to medium-low and cook, stirring occasionally, until the onions are golden brown and caramelized, about 15 minutes. If they start to look dry, add 1 tbsp water, scrape up the browned bits, and stir until the water evaporates. Repeat this 2–3 times for the deepest flavor. Transfer the onions to a bowl and set aside.

l

1 –2 large yellow onions

o

1 tbsp oil

s

½ tsp salt

2

For the In-N-Out Sauce:

1

Mix together all of the sauce ingredients in a small bowl until smooth. Taste and adjust if needed, then refrigerate until ready to use.

p

½ cup plain vegan yogurt

v

¼ cup vegan mayo

k

¼ cup ketchup

c

2 tbsp caramelized onions

s

½ tbsp sweet relish

d

½ tbsp dijon mustard

d

1 tbsp distilled white vinegar

s

1 tsp soy sauce, optional

2

For the Burgers:

1

Divide the plant based ground beef into 4 equal balls, about 85 g each. Place one ball on top of a tortilla and press it down firmly until the meat spreads into a thin, even layer almost to the edges. Repeat with the remaining tortillas. Season each with salt and pepper.

p

12 oz plant based ground beef, thawed

s

4 six inch flour tortillas

S

Salt and black pepper

2

Heat 2 tbsp oil in a large skillet over high heat. Once hot, place one tortilla beef-side down in the pan. Immediately press it down with a spatula or burger press and cook for 3–4 minutes, until the beef is deeply browned and crispy at the edges. Use a metal spatula to carefully scrape and flip the taco. Reduce the heat to medium, place a slice of vegan cheese on top of the beef, cover the pan with a lid, and let the cheese melt for 30–60 seconds. Transfer to a plate and repeat with the remaining tacos.

o

2 tbsp oil

v

4 slices vegan American cheese or Cheddar slices

3

To serve, drizzle a generous amount of sauce over each taco, then top with caramelized onions and shredded lettuce. Serve hot and enjoy!

R

Remaining caramelized onions

s

1 cup shredded lettuce

Notes

I love using Beyond Beef or Impossible Lite Ground Beef – both have 63 g protein per package. That means each serving of two tacos has over 31 g of protein from the beef alone. I used Mission Gluten Free Original Flour Tortillas, Soft Taco Size. To make them six inches, I trimmed them with a bowl and sharp knife, but you can leave them as-is. For the cheese, I used Daiya dairy free Cheddar slices, but any vegan American-style slice works.

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