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In N Out Sliders

Published: Jan 18, 2026 by Terri Weir · 5 Comments · This post may contain affiliate links

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My In N Out sliders are a handheld version of the always delicious animal style burger, perfect for meals or parties. Juicy, seasoned beef is topped with cheese, lettuce, caramelized onions, and of course, that delicious spread!

A white round plate with blue trim with a In N Out slider on it with a title overlay at the top.

As you might have noticed, I’m a big fan of sliders. I have quite a few of them in my recipe box because they’re easy to make and are perfect for main meals or as delicious appetizers at parties.

You’ll find cheeseburger sliders, Buffalo chicken sliders, Reuben sliders, and a lot more on my site. Now, I’ve added another tasty addition to my lineup.

These In N Out sliders pack the big flavor of the classic Animal burger into a bite-sized package that’s easy to make and hard to stop eating!

Jump to:
  • Why You’ll Love This Recipe
  • Key Ingredients
  • Variations
  • How to Make In N Out Sliders
  • Expert Tips
  • In N Out Sliders FAQs
  • Great Pairings for Your In N Out Sliders
  • In N Out Sliders

Why You’ll Love This Recipe

  • Basic Ingredients: All you need for this recipe are buns, ground beef, and a few other kitchen staples.
  • Simple Recipe: Prep is easy, and it only takes about 30 minutes from start to finish.
  • Customizable: You can play with this recipe to make it your own.
  • Versatile: These sliders make a great main meal or appetizer at any potluck or party.
  • Great for Gameday: These are an especially great fingerfood for gameday bashes.
  • Kid-Friendly: These sliders are loaded with flavors that even kids love.

Key Ingredients

You’ll find a complete list of the ingredients and their exact amounts in the recipe card at the bottom of the post.

A wood surface with all the ingredients needed to make In N Out Sliders placed on it.
  • Ground Beef: Lean ground beef gives plenty of flavor and meaty texture without at on of grease.
  • Seasonings: A simple blend of garlic powder, black pepper, and salt seasons the beef to perfection.
  • Mayo and Ketchup: Mayo and ketchup create the creamy base for the rich, sweet, and tangy sauce.
  • Apple Cider Vinegar: Apple cider vinegar adds extra tang to the sauce.

Variations

  • Ground Beef: Use ground turkey for a low-fat version. You could also use ground Italian sausage or bratwurst for a tasty twist.
  • Spicy: Add red pepper flakes for a kick of heat.
  • Cheese: American, sharp cheddar, and Swiss all work well in this recipe.
  • Apple Cider Vinegar: Use balsamic vinegar instead for a sweeter, more deeply flavored sauce.

How to Make In N Out Sliders

A glass mixing bowl on a wood surface with the ingredients to make the copycat spread in it.

Step 1: Mix the spread ingredients fully and chill them until ready to use.

A frying pan with cooked ground beef, onions, and seasonings in it.

Step 2: Cook the beef and half the onions until the beef is no longer pink and the onions are translucent. Drain and return to the pan. Add the seasonings and cook for a couple of more minutes. Set aside.

A glass baking dish with 12 buns with sauce and cheese on them.

Step 3: Place the bottom buns in a glass baking dish and add half the spread over them. Add half the cheese over the spread.

A glass baking dish with ground beef and cheese added to the slider buns.

Step 4: Add the beef, and the remaining cheese. Then, spread the remaining sauce onto the top buns and place them on the sliders.

!2 sliders in a glass baking dish before being baked.

Step 5: Brush melted butter on the buns and bake until golden. Saute the remaining onions in butter until fragrant as the sliders bake.

A stack of In N Out Sliders on a white plate with blue trim.

Step 6: Remove the slider tops, add the caramelized onions and lettuce, and enjoy.

Expert Tips

  • Always drain your beef after cooking it to avoid greasy sliders. Even lean ground beef releases some fat as it cooks.
  • Stir your beef and onions frequently to prevent the onions from burning. The same holds true when sauteing your onions before adding them to the sliders.
  • Use a sharp serrated knife to cut the rolls. This prevents them from getting smashed as you cut them.
  • I recommend a glass baking dish for these sliders. If you use a metal baking dish, especially a dark one, reduce your baking time a bit.
  • Can make this recipe with ground beef patties.

In N Out Sliders FAQs

What is an In N Out slider?

An In N Out slider is a handheld version of their popular Animal style burger featuring ground beef, lettuce, cheese, grilled onions, and of course, that tangy, creamy sauce.

Why were my sliders greasy?

If you don’t drain your beef, you’ll end up with greasy sliders. Even lean ground beef releases some fat as it cooks, so always drain it.

How long will In N Out sliders last?

Refrigerate these sliders for up to 3 days in an airtight container. Be aware that the longer they sit, the soggier the bread will become.

Two beef sliders on a white plate with blue trim with more sliders in the background.

Great Pairings for Your In N Out Sliders

  • A white plate with crispy deep fried hatch chile fries on it.
    Hatch Green Chile Fries
  • Creamy Mac and Cheese {Easy, Only 4-Ingredients}
  • A white round plate with blue trim with a stack of fried corn casserole bites on it with a bite out of the top one.
    Fried Corn Casserole Bites
  • Crispy Jalapeño Fries

If you try this recipe and love it, please be sure to leave a 5 ★★★★★ rating below and leave a comment! You can also pin it to your favorite Pinterest boards and save it for later.

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A white round plate with blue trim with a In N Out slider on it with a title overlay at the top.

In N Out Sliders

Great Grub, Delicious Treats
In N Out sliders are a handheld version of the always delicious animal style burger, perfect for meals or parties. Juicy, seasoned beef is topped with cheese, lettuce, grilled onions, and of course, that great spread!
5 from 5 votes
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 10 minutes mins
Total Time 30 minutes mins
Course Dinner, Lunch
Cuisine American
Servings 12 Sliders
Calories 345 kcal

Ingredients
  

  • 12 slider buns, we used Martin potato buns
  • 12 slices American cheese, or 16 slices of block sharp cheddar, see photo
  • 2 cups shredded lettuce
  • 3 tablespoons butter, melted, divided

Ground Beef Mixture

  • 1 ½ pound lean ground beef
  • 1 small onion divided
  • 1 teaspoon garlic powder
  • 1 teaspoon black pepper
  • 1 teaspoon salt

Copycat In N Out Spread

  • ½ cup mayonnaise
  • 2 tablespoon ketchup
  • 2 tablespoon dill relish
  • 1 ½ teaspoon apple cider vinegar
  • 1 ½ teaspoon sugar

Instructions
 

  • Preheat the oven to 375 degrees.

Copycat In N Out Spread

  • In a small bowl, mix all ingredients until combined.
  • Cover bowl with a lid or plastic wrap, and place in the fridge until ready to serve.

Ground Beef Mixture

  • In a large skillet, cook ground beef with ½ the diced onion until the meat is no longer pink and the onions are translucent. Drain grease and return to the pan.
  • Sprinkle the seasonings over the meat and cook for another 1-2 minutes.
  • Remove from heat and set aside.
  • In a 9×13 glass baking dish, place with bottom buns in the dish.
  • Next, evenly spread half the sauce over the bottom buns.
  • Place half the slices of cheese over the sauce, followed by spooning the meat mixture over the cheese.
  • Top with the remaining slices of cheese.
  • Spread the remaining spread onto the top buns and place the buns on top of the cheese.
  • Brush 2 tablespoons of melted butter on the top of the buns, and place in the oven for 10 minutes.
  • In a small pan, melt remaining butter and saute the remaining onions until browned and fragrant.
  • Carefully remove the sliders from the oven.
  • Remove the top buns and add the grilled onions and shredded lettuce.
  • Place the top buns back on and enjoy.

Notes

Tips
  • Always drain your beef after cooking it to avoid greasy sliders. Even lean ground beef releases some fat as it cooks.
  • Stir your beef and onions frequently to prevent the onions from burning. The same holds true when sauteing your onions before adding them to the sliders.
  • Use a sharp serrated knife to cut the rolls. This prevents them from getting smashed as you cut them.
  • I recommend a glass baking dish for these sliders. If you use a metal baking dish, especially a dark one, reduce your baking time a bit.
 
Nutritional values are approximate.
 
Please note that these values can change with different brands and any modifications made to the recipe. For the most accurate information, use a nutritional calculator with the exact brands and measurements.

Nutrition

Calories: 345kcalCarbohydrates: 20gProtein: 19gFat: 21gSaturated Fat: 8gPolyunsaturated Fat: 5gMonounsaturated Fat: 5gTrans Fat: 1gCholesterol: 68mgSodium: 716mgPotassium: 272mgFiber: 2gSugar: 5gVitamin A: 370IUVitamin C: 1mgCalcium: 257mgIron: 3mg
Keyword Aminal Style Burger, animal burger, Beef Sliders, Copycat, In N Out, In N Out copycat, In N Out sliders, Sliders
Tried this recipe?Let us know how it was!
Two photos of In N Out Sliders with the title overlay in the center.
A three collage photo of In N Out Sliders with the title overlay at the top.
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Reader Interactions

Comments

  1. Vidhya

    January 20, 2026 at 2:46 pm

    Wow, so much flavor in these sandwiches! Love this recipe!

    Reply
  2. Tammy

    January 20, 2026 at 10:47 am

    I love making takeout at home! These were SO good! I don’t have an In-n-Out where I live so this was such a fun treat ^_^

    Reply
  3. Catalina

    January 20, 2026 at 6:25 am

    Tried them last night and they were a hit. Simple ingredients but big flavor!

    Reply
  4. Ben

    January 19, 2026 at 5:00 pm

    These are fully awesome! I love the tangy sauce with the ground beef and cheese. Excellent recipe.

    Reply
  5. Beth

    January 19, 2026 at 4:24 pm

    These are so good! I’d honestly rather make these than get the Animal burger.

    Reply
5 from 5 votes

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Welcome to Great Grub, Delicious Treats! Hello, my name is Terri and I'm so glad you stopped by. I'm a self taught cook/foodie at heart, mom to three kids, photographer and have a love for amazing food. I left my full time job of being a hospice admissions RN, which was super tough and extremely sad, and at times, very rewarding to be there for the patients and families to blog full time which I absolutely love. I hope you enjoy, and check out, all of the delicious recipes on my site while you're here! And don't forget to sign up to receive every new recipe right to your email. Thanks again for stopping by! :)

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Welcome to Great Grub, Delicious Treats! Hello, my name is Terri and I'm so glad you stopped by. I'm a self taught cook/foodie at heart, mom to three kids, photographer and have a love for amazing food. I left my full time job of being a hospice admissions RN, which was super tough and extremely sad, and at times, very rewarding to be there for the patients and families to blog full time which I absolutely love. I hope you enjoy, and check out, all of the delicious recipes on my site while you're here! And don't forget to sign up to receive every new recipe right to your email. Thanks again for stopping by! :) Read More…

A wood surface with a black oval dish with a smoked cream cheese in it.
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A small stack of blueberry twists on a white plate with blue trim.
A white surface with pretzel rods decorated with a Valentine theme dessert.
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