Copycat In-N-Out Double-Double Burger

Copycat In-N-Out Double-Double Burger

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By Millie Pham

Hey burger fans!

If you’re obsessed with In-N-Out like my family is, you’re gonna love this homemade Double-Double.

It’s got juicy patties, melty cheese, fresh toppings, and that famous secret sauce—all made right in your kitchen.

Trust me, it’s easier than you think and perfect for a weekend family dinner or even a DIY burger night with the kids!

🛒 What You’ll Need

  • 1 lb ground beef (80/20 for juicy burgers)
  • Salt & pepper
  • 4 slices American cheese
  • 4 hamburger buns
  • 1 cup iceberg lettuce, shredded
  • 1 large tomato, sliced
  • 1 yellow onion, diced
  • 2 tbsp vegetable oil
  • 1 tbsp butter
  • ½ cup mayonnaise
  • 2 tbsp ketchup
  • 1 tbsp yellow mustard
  • 1 tbsp finely chopped pickles
  • 1 tsp white vinegar
  • Optional: dill pickle slices for topping
Copycat In-N-Out Double-Double Burger

👩‍🍳 Pro Tips

  1. Smash those patties while cooking—it’s the secret to that crispy edge In-N-Out is famous for.
  2. Chop onions small so they caramelize evenly and quickly.
  3. Toast the buns in butter—don’t skip this step, it adds a ton of flavor.
  4. Make the sauce ahead so the flavors can meld.
  5. Let the kids help build their burgers—it’s messy fun and they eat more when they help!

🧰 Tools You’ll Need

  • Cast iron skillet or large frying pan
  • Spatula
  • Mixing bowl (for sauce)
  • Knife + cutting board
  • Butter knife or spoon (for spreading sauce)

🔁 Substitutions & Variations

  • Swap ground turkey or plant-based patties for beef.
  • Use cheddar if you don’t have American cheese.
  • Add jalapeños or grilled mushrooms for a twist.

⏰ Make Ahead Tips

  • Make the secret sauce up to 3 days in advance and store in the fridge.
  • Pre-slice tomatoes and shred lettuce the morning of.

👨‍🍳 How to Make a Copycat In-N-Out Double-Double Burger

Step 1: Make the Secret Sauce

In a small bowl, mix together ½ cup mayo, 2 tbsp ketchup, 1 tbsp yellow mustard, 1 tbsp chopped pickles, and 1 tsp white vinegar. Set aside.

Copycat In-N-Out Double-Double Burger

Step 2: Caramelize the Onions

In a skillet over medium heat, add 1 tbsp butter and 2 tbsp oil. Once hot, add diced onions and cook low and slow for about 10-15 mins until golden brown and soft. Stir often!

Copycat In-N-Out Double-Double Burger

Step 3: Shape the Patties

Divide the beef into 4 equal parts and gently shape into thin, flat patties (a little wider than your bun). Season both sides with salt and pepper.

Copycat In-N-Out Double-Double Burger

Step 4: Cook the Patties

Heat the skillet over medium-high. Place 2 patties in the pan and smash them flat. Cook for 2-3 mins, flip, then place a slice of cheese on each. Cook until cheese melts and patties are browned. Repeat with the other 2 patties.

Copycat In-N-Out Double-Double Burger

Step 5: Toast the Buns

Add a little butter to the skillet and toast the cut sides of the buns until golden.

Copycat In-N-Out Double-Double Burger

Step 6: Build Your Burger

Spread secret sauce on both bun halves. Add shredded lettuce, tomato slice, optional pickle slices, one patty with cheese, some grilled onions, second patty with cheese, and top bun.

Copycat In-N-Out Double-Double Burger

🧊 Leftovers & Storage

  • Store leftover patties in an airtight container in the fridge for up to 3 days.
  • Reheat patties in a hot skillet or microwave.
  • Assemble fresh when ready to eat.

💬 That’s a Wrap!

You just made your own Double-Double at home! 🙌 It’s juicy, cheesy, and totally crave-worthy. If your family devours these like mine does, you’ll be making them on repeat. Try it out, drop a comment with how it went, or ask any questions you’ve got—I’m here to help!

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