Perfect Warm Sandwich

Featured in Stacked sandwiches worth craving.

This warm Melty Burger fuses the best of burgers and cheesy sandwiches. Homemade with a special sauce, it’s a hearty, tasty meal option.
alicia in the kitchen
Updated on Fri, 21 Mar 2025 14:56:06 GMT
A grilled sandwich stuffed with beef, caramelized onions, and melted cheese. Pin it
A grilled sandwich stuffed with beef, caramelized onions, and melted cheese. | tasteofsavor.com

The Melty Burger with Secret Sauce hits all the comfort food spots! The juicy beef patty, gooey cheese, sweet caramelized onions and that zesty secret sauce make every bite incredible. Perfect when you're craving something hearty for lunch or dinner.

What Makes These Melty Burgers So Irresistible

These burgers pack a flavor punch thanks to those slow-cooked onions and the tangy secret sauce. They'll remind you of your favorite roadside diner but made right in your kitchen. You can switch up the cheeses or bread to match your taste, and they come together so fast they're great for busy weeknights.

What You'll Need for Melty Burgers

  • Ground Beef: 450g shaped into 4 thin patties.
  • Rye Bread: 8 slices buttered on one side.
  • Swiss Cheese: 4 slices for smooth meltiness.
  • Cheddar: 4 slices for sharp flavor.
  • Onion: 1 large thinly sliced and perfectly caramelized.
  • Butter: For toasting the bread.
  • Salt and Pepper: For seasoning the patties.
  • Secret Sauce Ingredients:
    • 120g mayo
    • 30g ketchup
    • 15g finely chopped sweet pickles
    • 5ml Worcestershire sauce

How to Make Your Melty Burgers

Mix Up the Secret Sauce
Combine mayo, ketchup, chopped pickles and Worcestershire sauce in a bowl. Stir well and set aside.
Cook Down the Onions
Melt butter in a skillet over medium heat. Add onions and cook for 15-20 minutes, stirring until they turn golden brown.
Form Your Patties
Split the beef into 4 equal portions and shape into thin patties. Season with salt and pepper.
Cook the Beef
Using the same pan, cook patties for 3-4 minutes per side on medium-high heat. Set aside when done.
Build Your Sandwiches
Lay bread slices butter-side down. Layer Swiss cheese, beef patty, caramelized onions, cheddar, then top with another bread slice, butter-side up.
Toast Until Golden
Cook each sandwich for 2-3 minutes on each side until the bread turns golden and cheese gets all melty.
A grilled sandwich filled with meat, melted cheese and caramelized onions sits on a plate ready to eat. Pin it
A grilled sandwich filled with meat, melted cheese and caramelized onions sits on a plate ready to eat. | tasteofsavor.com

Tasty Twists and Serving Ideas

Try ground turkey or plant-based patties for a lighter option. Switch things up with pepper jack or provolone cheese if you want. Pair with french fries, coleslaw or a green salad for a complete meal. Whatever you do, don't skip the secret sauce, it really makes the whole thing special!

Frequently Asked Questions

→ Which meat makes the juiciest patties?
Pick ground meat with 15-20% fat. Mixing beef and pork works great too.
→ What’s the key to caramelized onions?
Cook them on medium heat while stirring off and on. It takes 15-20 minutes, so patience is important!
→ Can you prep the sauce before?
You can store it in the fridge for up to 5 days. Let it rest for a few hours so the flavors can mix better.
→ What type of bread works best?
Rye bread’s classic, but sourdough or whole-grain are good, too. Just make sure it’s sturdy enough for the fillings.
→ How do I reduce greasiness?
Drain the cooked meat well, use butter sparingly on the bread, and blot the caramelized onions with a paper towel.

Melty Burger Special

A juicy beef patty, melty cheese, and caramelized onions come together to create a tasty sandwich served with a secret sauce.

Prep Time
15 Minutes
Cook Time
30 Minutes
Total Time
45 Minutes
By: Alicia

Category: Sandwiches

Difficulty: Intermediate

Cuisine: American

Yield: 4 Servings (4 sandwiches)

Dietary: ~

Ingredients

01 1 large onion, sliced thinly.
02 450g ground beef.
03 4 slices cheddar cheese.
04 4 slices Swiss cheese.
05 8 slices rye bread.
06 120g mayo.
07 Salt and pepper.
08 A bit of butter for cooking.
09 1 teaspoon Worcestershire sauce.
10 1 tablespoon pickle relish.
11 2 tablespoons ketchup.

Instructions

Step 01

Stir together mayo, ketchup, relish, and Worcestershire sauce in a bowl.

Step 02

Heat butter and cook onions until they caramelize, about 15-20 minutes.

Step 03

Season the meat and shape it into 4 thin patties.

Step 04

Cook patties for 3-4 minutes per side.

Step 05

Spread butter on the bread, then layer the cheese, meat, and onions.

Step 06

Toast sandwiches on both sides for 2-3 minutes to melt the cheese.

Notes

  1. Let sandwiches rest for 1 minute before cutting and eating.
  2. Serve the sauce either on the side or directly on the sandwiches.

Tools You'll Need

  • Large skillet.
  • Griddle.
  • Spatula.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Gluten.
  • Dairy products.
  • Eggs (in mayo).

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 650
  • Total Fat: 42 g
  • Total Carbohydrate: 35 g
  • Protein: 38 g