Easy Smash Burger Sliders With Grilled Onions Recipe

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That crispy caramelized goodness of smashburger sliders is all you you have to think about to get your tastebuds going. They're topped with grilled onions and out of this world!
PREP:
20 minutes
TOTAL:
40 minutes
SERVES:
12
JUMP TO RECIPE

If you are looking for something mouthwateringly tasty, then you have to try these smash burger sliders served with caramelized onions. The combination of the juicy, flavorful burger patty and the sweet and savory caramelized onions is simply irresistible. My slider recipes will blow your mind!

Prep: 20 Mins | Total: 40 Mins | Serves: 12

Sliders are a great way to fill the gap and try something decadent at the same time. Much like traditional smash burgers, these patties get their caramelized crust by being cooked on a hot skillet.

However, these tasty burgers are almost bite sized and are served as sliders.

That crispy caramelized goodness of Smashburger sliders is all you you have to think about to get your tastebuds going. They’re topping with grilled onions and out of this world!

Oh whats that? you need photos too? Alright fine..

That crispy caramelized goodness of smashburger sliders topped with grilled onions is all you you have to think about to get your tastebuds going!

Like regular smashburgers, they are pressed into a piping hot skillet top to get that amazing carmelized crust on the outside of your ground beef.

But in fun sized slider form because.. you know, sliders.

Smash Burger Ingredients You’ll Need

  • 2 1/4 lb ground beef (80:20)
  • 1 sweet onion, thinly sliced
  • 1 tbsp olive oil
  • 2 tbsp salted butter
  • salt and pepper to taste
  • 12 slices cheddar cheese cut into quarters
  • 12 slider rolls

How to Get That Crispy Crust?

When cooking up these bad boys, you want to make every patty equal. I recommend making balls of burger patty meat approximately 1.5oz in size for these sliders (you can use a food scale for better accuracy). If they look oversized in the pan, don’t stress because they’ll be the right size once fully cooked.

If you want to be extra, place two patties in each burger, add a layer of cheese, and top them with caramelized onions. They’re so delicious you’ll be dreaming of them for days.

The trick is in the skillet to get the perfect crust on your smash burger patties. It’s essential to heat it as hot as you can before you start cooking. I’ve found leaving it to preheat for approximately 10 – 15 minutes.

Fair warning, your kitchen might get a bit smokey if you do this indoors. I’d only try it if you have an overhead extractor fan. This is why I usually cook my smash burgers outside.

That crispy caramelized goodness of smashburger sliders topped with grilled onions is all you you have to think about to get your tastebuds going!

Smash Burger Slider Tips and Variations

Here’s my smash burger pro tip: preheat your oven, keep it at around 160-170, and store your cooked smash burger patties until all of them are made. This way, your cheese will stay perfectly melty until serving time.

If you have kids like me, keep their smash burger sliders simple – meat, cheese, and the bun. You can top each cheesy patty off for the adults with caramelized onions. If you want to be extra fancy, add some pickles and pineapple.

For mom and dad’s smashburger sliders, they’re topped off with the grilled onions, and maybe a little avocado and pickle just to snazz things up.

But trust me – theres SOO much flavor going on with just meat cheese bun and some of those grilled onions, you may just want to follow the lead of the kids on this one!

Want to these smash burger sliders bigger brother? Check out this recipe

Smashburger Sliders with Grilled Onions

Course: Dinner, lunch
Cuisine: American
Keyword: burgers
Prep Time: 20 minutes
Cook Time: 20 minutes
Total Time: 40 minutes
Servings: 12 sliders
Calories: 410kcal
That crispy caramelized goodness of smashburger sliders is all you you have to think about to get your tastebuds going. They're topped with grilled onions and out of this world!
Print Recipe

Ingredients

  • 2 1/4 lb ground beef 80/20
  • salt and pepper to taste
  • 1 sweet onions thinly sliced
  • 1 tbsp olive oil
  • 2 tbsp salted butter
  • 12 slices cheddar cheese cut into quarters
  • 12 slider rolls

Instructions

  • Weight out loosely packed balls of ground beef to 1.5oz each. season with salt and place on a baking sheet uncovered in the fridge.
  • Thinly slice onions and place in a pan over medium heat with butter and oil. Let cook until brown and translucent; about 15 minutes; Cook before serving burgers, or place in an oven at the lowest temperature to keep them warm until ready to use.
  • Heat up a griddle on a stovetop or grill on high heat until smoke is coming off. Place 2-4 burgers at a time, smashing with a metal unslotted spatula, carefully sliding the spatula off so that the burger stays pressed to the griddle.
  • Let cook for about 2-3 minutes then firmly scape the patty and flip and add 2 quartered slices of cheese per patty.
  • Once the cheese is nice and melted you're ready to remove from the griddle. Stack once patty on top of another to double up, then place on your slider bun. repeat until all sliders are done.
  • Top with grilled onions and any of your favorite burger toppings and enjoy!

Notes

For the onions – Try using a mandolin to make the process easier. 
For the burgers, You may want to put these in a warmer until all your sliders are done so they’re nice and melted when serving – or just serve up immediately to each person!

Nutrition

Calories: 410kcal | Carbohydrates: 17g | Protein: 22g | Fat: 28g | Saturated Fat: 12g | Cholesterol: 93mg | Sodium: 268mg | Potassium: 279mg | Fiber: 1g | Sugar: 5g | Vitamin A: 229IU | Vitamin C: 1mg | Calcium: 143mg | Iron: 2mg
That crispy caramelized goodness of smashburger sliders topped with grilled onions is all you you have to think about to get your tastebuds going!

Derek Campanile
Derek Campanile
I'm an IT professional by day. Home cook for the family by night. Follow my blog for easy to make recipes, how-to's and ideas to gather the family at the dinner table!

2 Comments

  1. Dale says:

    Chocolate chip cookie smash burgers?

  2. Smoky Recipe says:

    I recently tried this recipe for chocolate chip cookies, and I have to say, they turned out absolutely scrumptious! The instructions were clear and easy to follow, making the whole baking process a breeze. The cookies came out perfectly golden brown on the outside, with a soft and chewy texture on the inside – just the way I like them! smokyrecipe

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