Sonic Patty Melt Copycat Recipe
A Sonic patty melt bridges the gap between a sandwich and a burger. It combines a sandwich and a burger, made with delicious components. The homemade version of patty melt will surely leave you drooling. See the magic yourself.
To mimic the Sonic flavors in your kitchen, all you need to do is to follow the right instructions. The Sonic patty melt features a seasoned ground beef patty, grilled onions, American cheese, and mayo-mustard sauce. All of this is clubbed between the Texas toast.
Season the patties, grill them, fry the onions, and assemble the elements. The real draw is the grilled, crispy onions dipped in buttermilk. These onions entice your taste buds and add crunch to the burger.
Next, we’ll cover the required equipment, ingredients, nutritional facts, and instructions. These details will help you make the patty melt right. You will also find some frequently asked questions in the article below.
Table of Contents
ToggleExpert Tips That I Recommend
- Gently season the beef and mix it until everything is well combined.
- Use beef with 80/20 fat content for juicy patties.
- To keep the patties in shape, chill them for 15-20 minutes.
- Do not press the patties while cooking, as it squeezes juice and results in dry patties.
Recipe Variation for Different Diets
- Keto Version: Swap Texas toast for a lettuce wrap; use almond flour instead of all-purpose flour. Instead of buttermilk, use heavy cream. Make sure all the seasonings and sauce are sugar-free.
- Gluten-Free: Use gluten-free burger buns instead of Texas toast. Use gluten-free flour instead of regular flour. Double-check that all seasonings and sauce are gluten-free.

Storing And Reheating This Recipe
Storing
- First, let the recipe cool down completely. Wrap it tightly in cling film, then transfer it to an airtight container and place it in the refrigerator.
- If you want, you can freeze it; all you need to do is, once the recipe cools down, wrap each patty individually in an airtight packet. For better results,s freeze onion rings separately, ly then add them to the freezer; they will remain fresh for up to 3 months.
Reheating
- Stovetop: First, heat the patties in a skillet over medium heat for 3-4 minutes on each side. Then toast the bread in the same skillet with some butter.
- Microwave: Heat patties in 30-second intervals; heat onion rings if required. After heating them, warm the bread and assemble right before serving.
What To Serve With This Recipe
The Sonic Patty Melt is a classic recipe that can be enjoyed for breakfast or an evening snack. Well, I always like to enjoy it with my all-time favorite fruit smoothie, or you can also enjoy it with fresh lemonade. For a lighter option, add some crunch to the patty and melt with zucchini fries or Sweet potato fries.
Printable Version
Sonic Patty Melt Copycat Recipe
Ingredients
For The Sandwich
- ½ lb Ground Beef 80/20 or chuck
- 4 Thick Slices of Texas Toast
- 1 Large Yellow Onion thinly sliced
- 2 slices American Cheese
- 2 slices Swiss or Pepper Jack cheese
- 3 Tablespoons Butter softened
- 1 Tablespoon Vegetable Oil
- Salt and black pepper to taste
For The Burger Sauce
- ¼ Cup Mayonnaise
- 1 Tablespoon Ketchup
- 1 Teaspoon Sweet Relish
- ½ Teaspoon Yellow Mustard
- Splash of White Vinegar
Equipment
- Griddle
- Tongs
- Bowls
- Whisk
- Butter Knife
Method
- In a small bowl, whisk together mayonnaise, ketchup, relish, yellow mustard, and vinegar until smooth. Refrigerate the sauce until ready to use.
- Heat vegetable oil in a large skillet over medium-low heat. Add the sliced onions and a pinch of salt. Cook slowly, stirring occasionally, for 15–20 minutes until the onions turn soft, golden, and sweet. Remove and set aside.
- Divide the ground beef into four equal portions and shape them into balls. Heat a skillet or griddle over medium-high heat.
- Place the beef balls onto the hot surface and smash them flat immediately using a spatula or burger press. Season with salt and pepper, then cook for about 3 minutes until a crispy crust develops. Flip and cook the other side.
- Add American cheese slices to two patties and Swiss cheese slices to the remaining two. Cover the skillet and cook for 1–2 minutes until the cheese melts. Stack the cheese-covered patties together.
- Butter one side of each Texas toast slice. Place two slices in the skillet with the buttered side down. Spread the burger sauce on the unbuttered side, then layer with the stacked cheesy patties and caramelized onions. Top with the remaining Texas toast slices, buttered side facing up.
- Cook over medium heat for 2–3 minutes until the bread is golden and crispy. Carefully flip and toast the other side for another 2–3 minutes until the sandwich is perfectly crisp and heated through.
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FAQ About Sonic Patty Melt
Why did my burger shrink while cooking?
Sonic patty melt features pound-seasoned beef patties, crispy onions, American cheese, and mayo and mustard sauce.
Why are my burgers dry?
The most common reason for a dry burger patty is either overcooking or adding lean ground beef to the sandwich.
Should I flip burger patties more than once?
Avoid flipping them again and again; you only need to flip them once. Let the patty cook from one side, then flip it.
How do I avoid Texas toast from being soggy?
Before you assemble the sandwich make sure you toast both the sides with butter until crispy and golden. Also, add sauce right before serving to prevent it from becoming soggy.
More Recipes That You Can Try
Gordon Ramsay Hamburger At Home
Paula Deen Heart Attack Burger
Conclusion
The Sonic Patty Melt is a perfect combination of a sandwich and burger with the juicy and tender patty. The well-seasoned patty, along with some fried onion rings, creates a real delicacy that will make you want more of it. Without wasting too much time, prepare this recipe and enjoy its flavors.
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