If you’ve ever craved that irresistible, perfectly crispy yet juicy burger from your favorite fast-food spot, wait until you try this Homemade Sonic Double Smasher Burger Recipe. It’s all about that satisfying crunch and melty cheese wrapped up in a soft bun, unlocking big flavors with simple ingredients. This recipe lets you recreate the magic right in your own kitchen, capturing every delicious layer that makes the Sonic Double Smasher so iconic and addictive.

Ingredients You’ll Need
To whip up this burger, you only need a handful of classic ingredients that each play a crucial role in achieving the perfect bite. Whether it’s the sharp cheddar for creamy richness or the tangy mustard blending with the sweet ketchup, every component works together to build flavor, texture, and color.
- Beef patties (2, 4 oz each, 80% lean): The heart of the burger, these provide juiciness and robustness.
- Cheddar cheese (2 slices): Melts perfectly, adding gooey, sharp depth.
- Soft burger buns (2): Lightly toasted to balance the crispiness of the patties and add softness.
- Mayonnaise (1 tablespoon): Brings creaminess and moisture to every bite.
- Ketchup (1 tablespoon): Adds a sweet and tangy zip.
- Yellow mustard (1 tablespoon): Offers a subtle bite to lift the flavors.
- Small onion, thinly sliced: Gives crunch and a fresh, sharp contrast.
- Pickle slices (optional): Perfect for that classic tang and crunch.
- Salt and pepper to taste: Essential seasoning that enhances the savory notes.
- Vegetable oil (1 tablespoon for cooking): Helps achieve those crisp, caramelized edges.
How to Make Homemade Sonic Double Smasher Burger Recipe
Step 1: Preheat and Prepare Your Cooking Surface
Start by heating a large skillet or griddle over medium-high heat, adding the vegetable oil to coat the surface. This step is vital for crisping up the patties quickly and locking in those savory juices.
Step 2: Season and Place the Beef Patties
Lightly season each beef patty with salt and pepper to bring out their natural flavor. Then, place them carefully onto the hot skillet, ready for the smashing moment.
Step 3: Smash the Patties for Perfect Crispiness
Using a sturdy spatula, smash each patty down immediately upon contact to create an ultra-thin layer. Let them cook undisturbed for 2 to 3 minutes so the edges caramelize and start to turn crispy—a key to that classic double smasher texture.
Step 4: Flip and Add Cheese
Flip the patties over and quickly place a slice of cheddar cheese on top of each. Cook for an additional 1 to 2 minutes, allowing the cheese to melt beautifully while the patties finish cooking through.
Step 5: Toast Your Buns for Extra Crunch
While your patties cook, pop the burger buns onto the same skillet for about a minute each until they turn lightly golden and crisp. This toasting step adds another layer of texture that pairs perfectly with the smashed patties.
Step 6: Build the Sauce Base
Spread mayonnaise, ketchup, and mustard generously on the bottom halves of the toasted buns. This sauce trio creates a creamy, tangy foundation that brightens every bite.
Step 7: Assemble the Layers
Place the cheesy beef patties onto each bun bottom, then top with crunchy sliced onions. If you like, add pickle slices for a tangy crunch that perfectly complements the richness.
Step 8: Final Touch and Serve
Cap your creation with the top bun halves and serve immediately while warm and juicy. This Homemade Sonic Double Smasher Burger Recipe shines best fresh, showcasing the perfect balance of crispy edges, melty cheese, and fresh toppings.
How to Serve Homemade Sonic Double Smasher Burger Recipe

Garnishes
Simple garnishes like fresh lettuce or tomato slices can add freshness and snap to your burger, but this recipe truly excels with just the toasted buns, onions, and optional pickles. A sprinkle of extra black pepper on top adds a little kick if you love a bit more spice.
Side Dishes
Crispy fries or thinly sliced tater tots are classic sides that pair beautifully with the double smasher. For a healthier option, crunchy coleslaw or a crisp green salad offer a refreshing contrast. The creamy sauces on the burger also make great dipping companions for any side.
Creative Ways to Present
To impress guests, try stacking your double smashers on a wooden board layered with parchment paper for that diner feel. You can also serve them open-faced to highlight the layers or slice the burger in half and secure with a colorful skewer, making it easier to savor every bite.
Make Ahead and Storage
Storing Leftovers
If you have leftovers, wrap each burger tightly in foil or plastic wrap and store in the refrigerator. Consume within 2 days for the best flavor and to keep the patties juicy without drying out.
Freezing
For longer storage, unassembled patties can be frozen before cooking, wrapped individually to prevent freezer burn. Buns do not freeze as well but can be kept in the freezer for a short time if airtight. Thaw patties completely before cooking.
Reheating
Reheat cooked patties gently in a skillet over medium heat to revive crispness, then melt cheese again if needed. Toast buns briefly to restore their warmth and texture. Avoid microwaving, as it tends to make the bun soggy and the meat rubbery.
FAQs
Can I use a different type of cheese?
Absolutely! While cheddar is classic for this recipe, feel free to experiment with American, Swiss, or pepper jack for a twist. Each cheese will add its own flavor and meltiness that can enhance the burger uniquely.
What is the best way to smash the patties?
Use a sturdy spatula or a burger press tool to firmly press down on the patties immediately after placing them on the hot skillet. The key is applying steady pressure to create a thin, even layer that crisps up beautifully.
Can I make this recipe vegetarian?
While this recipe is designed with beef patties, you can substitute with plant-based burger patties of your choice. Keep in mind cooking times and smashing technique may need slight adjustments depending on the patty’s texture.
How do I get the patties crispy without overcooking?
Smashing the patties thin and cooking them quickly over medium-high heat is essential. Let the edges caramelize without moving them for 2 to 3 minutes before flipping. This approach locks in juices while creating that signature crispy crust.
Is the combination of mayonnaise, ketchup, and mustard necessary?
While you can customize the sauces, the blend of mayo, ketchup, and mustard creates a balanced, creamy, tangy, and slightly sweet base that complements the beef and cheese perfectly—just like the classic Sonic experience.
Final Thoughts
This Homemade Sonic Double Smasher Burger Recipe is a true game-changer for anyone who loves a hearty, satisfying burger with that crispy edge and melty cheese goodness. It’s simple to make but delivers big on flavor and texture every time. I can’t recommend it enough—go ahead and try it yourself to experience the joy of making your own favorite smash burger at home!
Print
Homemade Sonic Double Smasher Burger Recipe
- Prep Time: 5 minutes
- Cook Time: 10 minutes
- Total Time: 15 minutes
- Yield: 2 servings
- Category: Main Course
- Method: Frying
- Cuisine: American
Description
A delicious homemade version of the Sonic Double Smasher Burger featuring two thin smashed beef patties topped with melted cheddar cheese, fresh onions, and pickles on toasted soft buns with a tangy mayonnaise, ketchup, and mustard spread.
Ingredients
Beef Patties
- 2 (4 oz) beef patties (80% lean)
- Salt and pepper to taste
- 1 tablespoon vegetable oil (for cooking)
Cheese
- 2 slices cheddar cheese
Buns and Toppings
- 2 soft burger buns
- 1 small onion, thinly sliced
- Pickle slices (optional)
Condiments
- 1 tablespoon mayonnaise
- 1 tablespoon ketchup
- 1 tablespoon yellow mustard
Instructions
- Preheat the Skillet: Preheat a large skillet or griddle over medium-high heat and add the vegetable oil to prevent sticking and ensure even cooking.
- Season the Patties: Season both sides of the beef patties with salt and pepper.
- Smash the Patties: Place the patties on the hot skillet and immediately smash them down with a spatula to create thin patties. Cook for 2–3 minutes until the edges are crispy and caramelized.
- Flip and Add Cheese: Flip the patties and place a slice of cheddar cheese on each. Cook for another 1–2 minutes until the cheese melts and the patties are cooked through.
- Toast the Buns: While the patties cook, toast the burger buns in the same skillet for about 1 minute until lightly golden and crispy.
- Spread Condiments: Spread mayonnaise, ketchup, and mustard evenly on the bottom halves of the toasted buns.
- Assemble the Burgers: Place the cheesy patties on the buns, and top with thinly sliced onions and pickles if using.
- Serve Immediately: Cover with the top halves of the buns and serve the burgers hot for the best flavor and texture.
Notes
- Use an 80% lean beef blend for juicy, flavorful patties.
- Smashing the patties thin helps achieve the classic crispy edges.
- To enhance flavor, you can caramelize the onions separately if desired.
- Pickles are optional but add a nice tangy crunch.
- Serve immediately to enjoy the melty cheese and crispy texture at their best.

