If you’re on the hunt for a burger that bursts with bold flavors and a tender, crispy texture, the Garlicky Onion Smash Burger Recipe is a must-try. This delightful spin on the classic smash burger combines juicy, seared beef patties with sweet, caramelized onions infused with garlicky goodness, delivering a symphony of rich, savory tastes with every bite. Whether you’re grilling for a crowd or just craving a hearty yet simple meal, this recipe is an absolute game changer that promises satisfaction from the first mouthwatering forkful to the last crumb.

Ingredients You’ll Need
Gathering the right ingredients is surprisingly straightforward for this Garlicky Onion Smash Burger Recipe, yet each one plays an essential role in building the perfect balance of flavor, texture, and color. From the juicy beef to the fragrant garlic and the sweet onions, every component is thoughtfully selected to create that signature taste.
- 1 pound ground beef (80/20): The ideal fat ratio ensures juicy, flavorful patties with a perfect crust.
- 1/2 teaspoon salt: Enhances the natural meat flavor and seasons the patties evenly.
- 1/2 teaspoon black pepper: Adds a gentle kick and depth to the burger’s taste.
- 1 small onion (thinly sliced): Caramelizes to add sweetness and pairs perfectly with the garlic.
- 2 cloves garlic (minced): Infuses the onions with a warm, aromatic punch that elevates every bite.
- 1 tablespoon butter: Creates a rich base for sautéing onions and garlic to golden perfection.
- 1 tablespoon vegetable oil: Helps achieve a beautifully crisp sear on the burger patties.
- 4 slices cheddar cheese: Melts perfectly over the patties, adding creamy tang and color.
- 4 burger buns: Toasted lightly to hold the juicy ingredients without falling apart.
- Optional toppings: Pickles, lettuce, tomato, and burger sauce to customize your creation.
How to Make Garlicky Onion Smash Burger Recipe
Step 1: Caramelize the Onions and Garlic
Start by melting butter and vegetable oil together in a skillet over medium heat. Toss in the thinly sliced onions and cook them gently for about 8 to 10 minutes, stirring every few minutes until they’re soft and golden brown. Just as the onions reach that perfect caramelized state, stir in the minced garlic and let it cook for an additional minute before removing the pan from heat. This combo sets the flavor foundation for your burger with sweetness and a delightful garlicky aroma.
Step 2: Form and Season the Beef Balls
Divide your ground beef into four equal portions and roll them into tight balls. No added fillers are necessary here — just pure, well-seasoned beef that will make your burger juicy and flavorful. Don’t forget to generously season each side of the patties with salt and black pepper for that irresistible savory edge.
Step 3: Smash and Sear the Patties
Heat a cast iron skillet or heavy griddle over high heat until it’s smoking hot — this is crucial for developing that signature crispy crust. Place the beef balls on the skillet and immediately smash them down with a sturdy spatula or burger press until they are about a quarter-inch thick. Resist the urge to move them around; let the heat do its magic for 2 to 3 minutes to create a flavorful crust that contrasts beautifully with the tender center.
Step 4: Flip and Add Cheese
Flip the patties carefully, then top each with a slice of cheddar cheese. Let them cook on this second side for 1 to 2 minutes, just enough time for the cheese to melt into gooey perfection while ensuring the burgers cook through. The combination of melted cheddar and the caramelized garlic onions is truly next level.
Step 5: Assemble Your Burgers
If you like, toast your buns lightly on the skillet to add a bit of crunch. Then, stack a cheesy patty on each bottom bun, generously spoon the garlicky onions over the top, and finish with any of your favorite toppings like crisp lettuce, juicy tomato slices, tangy pickles, or a smear of burger sauce. Top with the bun crown and get ready to indulge!
How to Serve Garlicky Onion Smash Burger Recipe

Garnishes
A sprinkle of fresh chopped parsley or a dash of smoked paprika on top of the garlicky onions can add a beautiful pop of color and an extra layer of flavor. Consider also adding a little crunchy lettuce or cool slices of tomato to balance the rich, savory meat and buttery onions with freshness.
Side Dishes
This Garlicky Onion Smash Burger Recipe pairs wonderfully with crispy fries, tangy coleslaw, or even a simple salad with a light vinaigrette. If you want to keep things classic, homemade potato chips or onion rings will never let you down. The trick is to complement the burger without overwhelming its robust flavors.
Creative Ways to Present
For a fun twist at your next gathering, turn these burgers into sliders, perfect for sharing and sampling. Alternatively, serve the patties without buns on a platter with toppings and sides on the side, letting everyone customize their own masterpiece. Either way, the garlicky onion topping steals the show every time.
Make Ahead and Storage
Storing Leftovers
If you have any leftover burgers or caramelized onions, store them separately in airtight containers in the refrigerator. The patties stay juicy, and the onions maintain their sweet, garlicky flavor well for up to 2 days, giving you an easy way to enjoy the best of this recipe later.
Freezing
You can freeze the uncooked beef balls tightly wrapped or in a freezer-safe container for up to 3 months. It’s best to freeze the caramelized onions separately in a smaller container for ease of reheating. Avoid freezing the assembled burger to keep buns from getting soggy.
Reheating
Reheat the patties gently in a skillet over medium heat or in the oven to prevent drying out. Warm the onions separately in a small pan or microwave to refresh their flavor and texture. When ready, assemble the burgers fresh for the best experience.
FAQs
What makes this a “smash” burger?
The term “smash” comes from pressing the beef balls flat on a hot skillet to maximize the contact with the cooking surface, creating a crispy, caramelized crust that enhances flavor and texture.
Can I use other types of cheese?
Absolutely! While cheddar is classic, you can experiment with American, pepper jack, or Swiss to suit your taste preferences. Just pick a cheese that melts well over the hot patties.
Is it important to caramelize the onions first?
Yes, caramelizing the onions slowly over low heat brings out their natural sweetness, which balances the savory meat and adds depth when combined with garlic in this recipe.
Can I prepare the onions in advance?
You sure can. Caramelized garlic onions can be made a day ahead and stored in the refrigerator, making your burger assembly even quicker.
How do I get a crispy crust without overcooking the burger?
Using a very hot pan and smashing the patties thin helps create that crispy exterior quickly without cooking the inside too long. Cooking each side for just a few minutes maintains juiciness inside.
Final Thoughts
The Garlicky Onion Smash Burger Recipe is one of those rare dishes that feels like a special occasion yet comes together with ease and simple ingredients. The irresistible combo of crispy, juicy beef and sweet, garlicky onions creates a burger experience you’ll want to return to again and again. So go ahead, gather your ingredients, fire up your skillet, and treat yourself to this unforgettable burger delight!
Print
Garlicky Onion Smash Burger Recipe
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Total Time: 25 minutes
- Yield: 4 burgers
- Category: Main Course
- Method: Stovetop
- Cuisine: American
- Diet: Gluten Free
Description
This Garlicky Onion Smash Burger recipe features juicy, crispy-edged beef patties topped with sweet caramelized onions infused with garlic, melted cheddar cheese, and your choice of fresh toppings. Cooked on a stovetop skillet, these burgers deliver rich, savory flavors with a simple technique that ensures maximum taste and texture in every bite.
Ingredients
Beef Patties
- 1 pound ground beef (80/20)
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
Garlicky Onions
- 1 small onion, thinly sliced
- 2 cloves garlic, minced
- 1 tablespoon butter
- 1 tablespoon vegetable oil
Assembly
- 4 slices cheddar cheese
- 4 burger buns
- Optional toppings: pickles, lettuce, tomato, burger sauce
Instructions
- Prepare the Garlicky Onions: In a skillet over medium heat, melt the butter combined with vegetable oil. Add the sliced onions and cook for 8 to 10 minutes, stirring occasionally, until the onions become soft and caramelized. Stir in the minced garlic and cook for an additional 1 minute. Remove the mixture from heat and set aside.
- Form Beef Patties: Divide the ground beef evenly into 4 balls. Season each ball with salt and black pepper to taste before cooking.
- Heat Skillet: Preheat a cast iron skillet or griddle over high heat until very hot to ensure proper searing.
- Smash and Cook Patties: Place each ground beef ball on the hot skillet and immediately smash it flat with a heavy spatula or burger press to create a thin patty. Let the patties cook undisturbed for 2 to 3 minutes to develop a crispy, browned crust.
- Flip and Add Cheese: Flip each patty carefully, then place a slice of cheddar cheese on top. Cook for an additional 1 to 2 minutes until the cheese melts and the patties are cooked through.
- Toast Buns and Assemble: Toast the burger buns if desired. Place each cheese-topped patty onto the buns, then spoon the garlicky caramelized onions over each burger. Add optional toppings like pickles, lettuce, tomato, or burger sauce to taste. Serve immediately while hot.
Notes
- Smashing the burgers creates a crispy edge and juicy center; use a firm spatula and press firmly for best results.
- For enhanced flavor, mix a teaspoon of Worcestershire sauce into the ground beef before forming the patties.
- Use gluten-free buns to make this recipe suitable for a gluten-free diet.
- Cook patties on a very hot skillet to ensure a good sear and flavorful crust.

