These copycat White Castle sliders are so insanely good and even better than the original! These mini burgers are full of big flavors like savory onion, creamy peanut butter, and rich melted cheese. It's seriously a combination unlike anything else, and everyone is sure to love them!
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The Best Copycat White Castle Burger Recipe
Whenever I want fast food burgers, I always make these sliders. They come together so easily and are ten times better than the ones from White Castle. I don't know if it's the savory onion soup mix, cheesy Velveeta, peanut butter, or the mini rolls, but there's something addicting about these sliders.
I love making these mini burgers if I'm hosting my friends or family since they're a hit every time. They're also easy enough to whip up for a late-night snack when the burger cravings hit. I usually serve a big platter of these sliders along with my famous copycat Taco Bell nacho fries. You can't go wrong with burgers and fries!
Why You'll Love This Recipe
It's a classic favorite. There are so many reasons why these burgers are so popular. They have a one-of-a-kind flavor, and you can top these burgers with all of your familiar favorites like lettuce, tomato, and onion.
So flavorful! There are a lot of flavors going on in these burgers. Onion soup, peanut butter, and cheese are just the beginning. Spread a little bit of garlic aioli on the bun before topping and add another incredible flavor to the mix.
Easy to make. While some recipes make burgers complicated, there's nothing intimidating about these White Castle burgers. You simply cook the patties in the oven, put them on a slider bun, add your toppings, and enjoy!
Ingredients You'll Need
- Ground beef- the perfect meat for these burgers, I like using an 80/20 split for the most flavor.
- Onion soup mix- elevates the flavor of the ground beef to another level of deliciousness.
- Milk- I used whole milk, but any dairy milk will do here.
- Onion- chopped. I find white or yellow onions are best.
- Peanut butter- this is optional, but any smooth peanut butter or powdered peanut butter adds another depth of flavor.
- Velveeta cheese- or American cheese slices for that classic cheeseburger flavor.
- Buns- slider-sized sesame brioche buns if you want to make White Castle sliders or soft white burger buns for regular-sized cheeseburgers.
How To Make White Castle Burgers
Step 1: Prepare the burger mixture. Preheat the oven to 350°F and line a baking sheet with parchment paper. Combine the ground beef, onion soup mix, and milk in a bowl. Add the peanut butter if you're using it and mix well to combine everything together.
Step 2: Cook the meat. Spread the burger mixture into a large rectangle over the baking sheet and bake it for 10 minutes. It will shrink during the baking process, so don't worry if it ends up smaller than before.
Step 3: Add the onions. After 10 minutes, take the baking sheet out of the oven. Scatter the onions evenly on top of the beef mixture and put it back in the oven to bake for 15 more minutes.
Step 4: Add the cheese. After another 15 minutes, remove the pan from the oven. Add the cheese slices evenly on top of the meat. Bake for another 10 minutes or until the cheese is melted completely.
Step 5: Top the burgers. Add the tops of the buns over the cheese and place the baking sheet back in the oven for about 5 more minutes. You want the tops of the buns to get golden brown but not too dark, so check on it periodically.
Step 6: Assemble the burgers and serve! Remove the burgers from the oven and slice the meat around the bungs to make the individual sliders. Then add the burger and top bun to the bottom buns. Serve the White Castle burgers with French fries, onion rings, ketchup, Big Mac sauce, or your favorite condiments. Enjoy!
Tips To Make The Best Recipe
- You can use a rolling pin to help spread the ground beef out on the baking tray. This will also help make sure the beef is an even thickness.
- Poking a few holes in the rolled-out ground beef with a skewer or chopstick to help the patties lay flat and not curl or puff up while cooking.
- If your baking sheet isn't big enough to hold all of the beef, you can cut the beef in half and cook it in two batches.
- If you don't want to use the oven, feel free to cook individual patties on the grill!
Storing and Reheating Leftovers
In the fridge: The best way to store any leftover burgers is to just store the patties. Keep them in an airtight container in the fridge for three to four days.
In the freezer: If you don't think you'll eat the leftover sliders in a few days, you can wrap the leftover beef patties individually in plastic wrap and store them in the freezer. They'll keep for about 3 months.
Reheating: My favorite way to reheat burgers is to put the meat back on a baking sheet and warm it in the oven for about 10 minutes at 350°F. Just add more time for frozen burgers. Then, you can assemble the burgers and enjoy.
More Copycat Recipes
- McDonalds Big Mac
- Popeyes chicken sandwich
- Chick Fil A grilled chicken
- Taco Bell grilled cheese burrito
- Smash burger tacos
- 1 lb. ground beef
- 1oz. onion soup mix
- ¼ cup milk
- 1 small onion, chopped
- ½ tablespoon peanut butter or peanut powder, optional
- 6 slices Velveeta cheese
- 6 sesame brioche buns or 12 mini slider buns
- Preheat oven to 350°F. Line a baking sheet with parchment paper.
- Combine ground beef, onion soup mix, and milk in a bowl. Add peanut butter if you're using it, and mix to combine.
- Spread the mixture over the baking sheet and bake for 10 minutes. It will shrink during the cooking process.
- Scatter the onions around the beef and bake for 15 more minutes.
- Remove from the oven and add the cheese slices on top of the beef.
- Bake for another 10 minutes or until the cheese is melted.
- Add the tops of the buns over the cheese and place back in the oven for about 5 more minutes.
- Remove from the oven and slice. Lift the meat with a spatula and set it on the bottom buns.
- Serve burgers/sliders with French fries and your favorite condiment.
Serving Size:1 slider
Amount Per Serving: Calories: 543Total Fat: 31.3gSaturated Fat: 15.8gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 112mgSodium: 2979mgCarbohydrates: 41gFiber: 2.5gSugar: 12.1gProtein: 30.6g