When trying to recreate In-N-Out’s double-double burger, here’s what I learned: Slathering the patty with yellow mustard while it’s cooking is key. It’s what makes an “Animal-Style” burger SO. FREAKIN’. GOOD. When seasoning the patties, don’t overdo it with the salt—the mustard is already pretty salty.
Contents
As for the sauce, I tried (and tried…and tried) to match the taste of In-N-Out’s secret spread. But I failed miserably each time. So I gave up and turned to Chick-fil-A instead. You can’t beat mayo + barbecue sauce + honey mustard + lemon juice.
Ingredients
For the onions
- 1 tbsp.vegetable oil
- 1 tbsp.butter
- 1large onion, chopped
- Kosher salt
- Freshly ground black pepper
- 1 tbsp.apple cider vinegar
For the sauce
- 1/4 c.mayonnaise
- 2 tsp.honey mustard
- 2 tsp.barbecue sauce
- 1 tsp.lemon juice
For the burgers
- 1 lb.ground beef
- Kosher salt
- Freshly ground black pepper
- 6slices American cheese
- 4 tbsp.yellow mustard
- 3potato buns, toasted
- Iceberg lettuce
- 1tomato, sliced
Directions
-
Make onions
- Step 1Caramelize onions: In a large pan over medium heat, heat oil with butter. Add onion and cook until onion begins to sweat and turn golden, about 5 minutes. Reduce heat to medium-low and continue to cook until onions are soft, about 15 minutes more.
- Step 2Add a splash of water to pan, and scrape up any browned bits. Continue to cook until onions are jammy and caramel in color, adding a splash of water if onions start to dry out, about 10 minutes more.
- Step 3 Season with salt and pepper, then stir in vinegar.
-
Make sauce
- Step 1In a small bowl, whisk together all ingredients.
-
Make burgers
- Step 1Divide ground beef into six equal portions. Form meat into very thin patties (as thin as you can make them!). Season both sides with salt and pepper.
- Step 2Heat a large skillet (preferably cast iron) over medium-high heat. Working in batches, add patties to skillet. With a spatula, press down on patties to smash them even more. Spread a tablespoon of yellow mustard onto the raw side of each patty. When bottoms are seared and crusty, flip patties, about 4 minutes.
- Step 3Top each patty with a slice of cheese and cook until cheese is melty and burgers are cooked through, about 4 more minutes. Repeat with remaining burgers. Top each cooked burger patty with caramelized onions.
- Step 4Spread sauce onto each bottom buns then top with lettuce, a tomato slice, two burger patties, and the top burger bun.
