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A hand holding a In and Out Burger Lettuce Wrap on a blue background.

In and Out Burger Lettuce Wraps

  • Author: Kari Peters
  • Total Time: 1 hour
  • Yield: 4 servings 1x
  • Diet: Gluten Free


Enjoy all the diner burger flavors at home with these easy to make In and Out Burger Lettuce Wraps! They’re loaded up with juicy burger patties brushed with mustard, caramelized onions, tomatoes, pickles, and of course the famous burger sauce as well. These are naturally gluten free with a dairy free and Whole30 option that’s low carb friendly as well. So now you can enjoy this fast food chain favorite even if you don’t live anywhere near and In and Out!



Caramelized Onions:

2 yellow onions

1 Tablespoon avocado or olive oil

Sea salt to taste


1 pound ground beef, shaped into 4 patties about 3/4” thick

Optional: 4 slices cheese, see notes, omit for dairy free and Paleo

8 leaves green leaf lettuce, washed and dried, or 2 small heads iceberg if preferred

2 slicing tomatoes, sliced, 10 ounces

4 dill pickles thinly sliced

2 Teaspoons yellow mustard

Secret Sauce:

1/4 cup mayonnaise

2 Tablespoons ketchup, we use sugar free ketchup

1 Tablespoon pickle relish, or minced dill pickle for sugar free

1/2 Teaspoon white wine vinegar

Optional: maple syrup or coconut aminos to taste


Start by heating a large pan 10″ or larger over medium heat. While it heats prepare the onions by dicing them 1/2″ or cutting them into half moon slices.

Add the oil to the heated pan along with the sliced onions, and cook over medium or medium-low until the onions become softened and browned, about 20-30 minutes. Season to taste with sea salt and set the onions aside. You will have about 1 cup of caramelized onions.

Preheat the grill or griddle over medium heat until it reaches a steady temperature of 350-400ºF. While the grill heats prepare the burger ingredients and mix together your choice of secret sauce recipes.

For the burgers, divide the yellow mustard equally between the 4 patties, about 1/2 teaspoon per patty and spread it in a thin layer over one side of the burgers. You want to grill the mustard side down first.

Grill the burgers for 6-10 minutes per side depending on desired doneness, adding the optional cheese slices halfway through the cooking time when you flip the burgers.

When the burgers are done to your liking, serve them right away with all the toppings and secret sauce.


We really like sliced cheddar on these burgers. If you want to be extra authentic, buy a yellow cheddar, but be sure it’s not chemically dyed but colored naturally.

The nutrition information is calculated with a 2 ounce slice of cheese on each burger and the sauce divided into 4 servings.

Secret sauce tends to be sweet, so you can add a bit of maple syrup to taste if you like.

  • Prep Time: 20 mins
  • Cook Time: 40 mins
  • Category: Burgers
  • Method: Grilling
  • Cuisine: Amercian

Keywords: In and Out Burgers, Low Carb In and Out Burgers, Lettuce Wrap Burgers