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Animal Style In-N-Out Double-Doubles

A healthier spin on the classic animal style double-double from In-N-Out with lean ground beef smash burgers, low fat spread, and chopped chiles.
4.57 from 30 votes
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Prep Time: 10 minutes
Cook Time: 15 minutes
Total Time: 25 minutes
Servings: 2 Burgers
Calories: 415kcal
Author: Mason Woodruff

Ingredients

  • 8 oz Lean Ground Beef 96/4
  • Salt and Pepper to taste
  • 1/4 C 30g Diced White Onion*
  • 1/4 C 30g Diced Banana Peppers*
  • 1 Tbsp 15g Yellow Mustard
  • 4 slices American Cheese
  • 2 Hamburger Buns
  • Iceberg Lettuce Sliced Tomato, and Pickles (optional)

For the In-N-Out Spread**

  • 2 Tbsp + 2 tsp Light Mayo
  • 2 Tbsp Sugar Free Ketchup
  • 2 tsp Relish
  • 1/2 tsp White Vinegar
  • 1/2 tsp Granulated Sugar

Instructions

  • Begin to preparing the diced onion and banana peppers, all toppings for burger assembly, and the In-N-Out spread.
  • Toast the buns well in a large skillet or on a griddle. Optional: spread 1/2-1 tablespoon of light mayo on the buns for extra browning. Set the toasted buns aside.
  • Divide the ground beef into four 2-ounce portions. Don't over handle or roll into balls like meatballs. Add a pinch of salt and black pepper and set aside.
  • Cooking the Burgers
  • Heat your skillet or griddle over medium-high heat.
  • Once hot, carefully place the ground beef, one portion at a time, in the skillet. Place a small square of parchment paper or a large non-stick spatula on top of the beef and press firmly into the skillet. You want to smash them into a thin, lacy-edged patty. Repeat with the remaining beef.
  • Add the diced onion, chopped banana peppers, and yellow mustard on top of two of the four patties.
  • Continue cooking until a dark brown crust forms on the bottom of each patty before flipping and adding a slice of American cheese to each patty. (Don't worry about losing some onion/chiles when flipping.)
  • Cook for another minute or so after flipping. Once the cheese has melted, place the patty with the onion and peppers on top of the other patty and remove from the heat.
  • Add spread on both buns, place the lettuce, tomato, and pickles on the bottom bun, followed by the burgers. Close, serve, and enjoy!

Notes

*True animal style at In-N-Out comes with caramelized onion, but I wanted a quick cooking burger. If you have time to caramelize onions, omit the diced onion from cooking and add caramelized onions during burger assembly. The chopped chiles are optional. In-N-Out uses sport peppers, but banana peppers are easier to find in my experience.
**In-N-Out's spread is a secret, but our favorite food scientist, J. Kenji López Alt, did some sleuthing to calculate ingredient ratios based on nutrition facts. This recipe makes enough sauce for about 4 burgers. So you can either cut it in half, use the extra for a fry sauce, or save for later.
For Protein Style Burgers, you can wrap the burgers in leaf lettuce instead of using buns. You can also make Flying Dutchman burgers by sandwiching the patties with two slices of cheese, no buns. Make them animal style by still adding the diced onion and topping with spread and pickles.

Nutrition

Serving: 1Burger | Calories: 415kcal | Carbohydrates: 28g | Protein: 33g | Fat: 18g