Cast Iron Patty Melts

Featured in: Simple Comfort Dinners

This dish features tender ground beef patties seasoned and cooked to perfection in a cast-iron skillet. Thinly sliced onions are slowly caramelized in butter until golden and sweet, then layered on top of melted Swiss cheese and patties between rye bread slices. Grilled in buttered cast-iron, the bread crisps to a golden brown while the cheese melts smoothly, creating a satisfying combination of textures and flavors. Ideal for a hearty and comforting meal.

Updated on Mon, 24 Nov 2025 13:49:00 GMT
Cast-Iron Patty Melts sizzling in a cast-iron skillet, showcasing a perfect golden-brown crust. Pin This
Cast-Iron Patty Melts sizzling in a cast-iron skillet, showcasing a perfect golden-brown crust. | messli.com

A classic diner favorite featuring juicy beef patties, caramelized onions, and melty cheese, all grilled between slices of rye bread in a cast-iron skillet.

This dish brings the nostalgic diner experience right to our home kitchen with minimal fuss and maximum flavor every time.

Ingredients

  • For the Onions: 2 large yellow onions, thinly sliced, 2 tablespoons unsalted butter, 1/2 teaspoon salt, 1/4 teaspoon black pepper
  • For the Patties: 1 pound (450 g) ground beef (80/20), 1 teaspoon Worcestershire sauce, 1/2 teaspoon garlic powder, 1/2 teaspoon salt, 1/4 teaspoon black pepper
  • For the Sandwiches: 8 slices rye bread, 8 slices Swiss cheese, 4 tablespoons unsalted butter, softened

Instructions

Prepare the onions:
In a large cast-iron skillet over medium heat, melt 2 tablespoons butter. Add sliced onions, salt, and pepper. Cook, stirring occasionally, until onions are deeply golden and caramelized, 15 20 minutes. Transfer to a bowl and set aside.
Form the patties:
In a mixing bowl, combine ground beef, Worcestershire sauce, garlic powder, salt, and black pepper. Mix gently and shape into 4 oval patties, slightly larger than the bread slices.
Cook the patties:
Wipe out the skillet and increase heat to medium high. Add patties and cook 3 4 minutes per side, until browned and cooked through. Remove from skillet and set aside.
Assemble the sandwiches:
Lay out rye bread slices. On four slices, layer one slice of Swiss cheese, a beef patty, a generous portion of caramelized onions, and another slice of cheese. Top with remaining bread slices.
Grill the melts:
Wipe out the skillet and return to medium heat. Spread softened butter on the outside of each sandwich. Place sandwiches in the skillet (work in batches if needed) and grill 3 4 minutes per side, pressing gently, until bread is golden and cheese is melted.
Slice and serve:
Slice in half and serve hot.
Juicy beef patties layered with caramelized onions and melted Swiss in these classic Cast-Iron Patty Melts. Pin This
Juicy beef patties layered with caramelized onions and melted Swiss in these classic Cast-Iron Patty Melts. | messli.com

Our family gathers around the skillet each time, creating new memories with this hearty classic.

Notes

For extra flavor, add a smear of Dijon mustard to the bread before assembling. Substitute Swiss cheese with cheddar or provolone if desired. Serve with pickles or crispy fries for a true diner experience.

Required Tools

Cast iron skillet, Mixing bowl, Spatula, Knife and cutting board

Allergen Information

Contains Dairy (butter, cheese), Gluten (rye bread), Beef. Check rye bread for sesame or soy if sensitive. Always verify ingredient labels for allergens.

A close-up of fully cooked Cast-Iron Patty Melts ready to be sliced, inviting you to enjoy a perfect bite. Pin This
A close-up of fully cooked Cast-Iron Patty Melts ready to be sliced, inviting you to enjoy a perfect bite. | messli.com

This recipe is perfect for busy weeknights and guaranteed to please everyone at the table.

Recipe Q&A

How do I caramelize onions perfectly?

Slice onions thin and cook them slowly in butter over medium heat, stirring occasionally until golden and sweet, about 15-20 minutes.

What type of beef is best for the patties?

Use ground beef with an 80/20 lean-to-fat ratio for juicy and flavorful patties that hold together well during cooking.

Can I substitute the Swiss cheese?

Yes, cheddar or provolone also work well and melt nicely for a rich cheesy layer.

How do I prevent the bread from getting soggy?

Spread softened butter on each bread slice before grilling to create a crispy, golden crust that resists sogginess.

What skillet should I use to grill them?

A cast-iron skillet is ideal for even heat distribution and achieving a crispy, caramelized crust on the sandwiches.

Cast Iron Patty Melts

Juicy beef patties and caramelized onions grilled with melted cheese on rye bread in a cast-iron skillet.

Prep Needed
15 minutes
Time to Cook
25 minutes
Overall Time
40 minutes
Created by Messli Tessa Marlow


Skill Level Easy

Cuisine American

Makes 4 Portions

Dietary Notes None specified

What You'll Need

Onions

01 2 large yellow onions, thinly sliced
02 2 tablespoons unsalted butter
03 1/2 teaspoon salt
04 1/4 teaspoon black pepper

Beef Patties

01 1 pound ground beef (80/20)
02 1 teaspoon Worcestershire sauce
03 1/2 teaspoon garlic powder
04 1/2 teaspoon salt
05 1/4 teaspoon black pepper

Sandwiches

01 8 slices rye bread
02 8 slices Swiss cheese
03 4 tablespoons unsalted butter, softened

Steps

Step 01

Caramelize the onions: Heat 2 tablespoons of unsalted butter in a large cast-iron skillet over medium heat. Add the sliced onions, salt, and pepper. Cook, stirring occasionally, until onions become deeply golden and caramelized, about 15 to 20 minutes. Transfer to a bowl and set aside.

Step 02

Shape the patties: In a mixing bowl, gently combine ground beef with Worcestershire sauce, garlic powder, salt, and black pepper. Form into 4 oval patties slightly larger than the bread slices.

Step 03

Cook the beef patties: Increase heat to medium-high and wipe out the skillet. Add patties and cook for 3 to 4 minutes per side until browned and cooked through. Remove from skillet and set aside.

Step 04

Assemble the melts: Arrange rye bread slices on a work surface. On four slices, layer one slice of Swiss cheese, a cooked beef patty, a generous portion of caramelized onions, and another slice of Swiss cheese. Top each with the remaining bread slices.

Step 05

Grill the sandwiches: Wipe out the skillet and return to medium heat. Spread softened butter on the outside of each sandwich. Grill sandwiches in the skillet, working in batches if necessary, for 3 to 4 minutes per side, pressing gently, until the bread is golden brown and the cheese has melted.

Step 06

Serve: Slice each sandwich in half and serve immediately while hot.

Tools You'll Need

  • Cast-iron skillet
  • Mixing bowl
  • Spatula
  • Knife and cutting board

Allergy Details

Be sure to check each ingredient for allergens and consult your healthcare provider if you have questions.
  • Contains dairy (butter, cheese), gluten (rye bread), and beef
  • Check rye bread for sesame or soy if sensitive; verify ingredient labels for allergens

Nutrition Breakdown (per portion)

For general guidelines only. Not meant to provide medical or dietary diagnosis.
  • Caloric Value: 620
  • Fats: 36 g
  • Carbohydrates: 40 g
  • Proteins: 36 g