---
title: "Patty Melt with Caramelized Onions"
url: https://save.cooking/@american_classic/patty-melt-with-caramelized-onions
author: Save.Cooking American Classics
author_profile: https://save.cooking/@american_classic
description: "A true American diner classic: a juicy beef patty, deeply caramelized onions, and melted Swiss (or American) cheese pressed between buttery rye bread until crisp and golden. This recipe teaches the key technique—slow onion caramelization—for maximum flavor."
prep_time: 10 minutes
cook_time: 40 minutes
total_time: 50 minutes
servings: 4
tags: ["Main Dish", "Make Ahead", "American", "Stovetop", "Dinner", "Lunch", "Beef", "Grilled"]
published: 2026-01-06
updated: 2026-01-14
---

# Patty Melt with Caramelized Onions

*Recipe by [@american_classic](https://save.cooking/@american_classic)*

A true American diner classic: a juicy beef patty, deeply caramelized onions, and melted Swiss (or American) cheese pressed between buttery rye bread until crisp and golden. This recipe teaches the key technique—slow onion caramelization—for maximum flavor.

The patty melt is the delicious crossroads of burger and grilled cheese, born from mid-century American diners that prized simple ingredients done right. The secret isn’t fancy sauce—it’s patience with the onions and a steady skillet temperature. Once you master those two details, you can make a patty melt at home that rivals any counter-service classic.

**Total Time:** 50 minutes | **Prep:** 10 minutes | **Cook:** 40 minutes | **Servings:** 4

## Ingredients

### Caramelized Onions

- 2 large yellow onions, thinly sliced
- 2 tbsp unsalted butter
- 1 tbsp neutral oil (canola or vegetable)
- 1/2 tsp kosher salt, plus more to taste
- 1/4 tsp black pepper
- 2–4 tbsp water, as needed (to deglaze if onions start sticking)

### Patties

- 1 lb ground beef (80/20 preferred)
- 1 tsp kosher salt
- 1/2 tsp black pepper
- 1/2 tsp garlic powder (optional)

### Sandwich Assembly

- 8 slices rye bread (or marbled rye)
- 8 slices Swiss cheese (or 4 Swiss + 4 American for a classic diner blend)
- 4 tbsp unsalted butter, softened (for spreading)
- 1 tbsp yellow mustard (optional, for serving)
- Dill pickle chips, for serving (optional)

## Instructions

1. Caramelize the onions: Heat butter and oil in a large skillet over medium heat. Add onions and salt, tossing to coat. Cook 5 minutes, then reduce heat to medium-low and cook 20–30 minutes, stirring every few minutes, until deeply golden-brown and jammy. If the pan gets dry or onions start sticking, splash in 1–2 tbsp water and scrape up browned bits. Season with pepper and adjust salt. Transfer onions to a bowl.

2. Form the patties: Divide beef into 4 equal portions (about 4 oz each). Gently shape into thin, oblong patties slightly larger than the bread (they shrink). Season both sides with salt, pepper, and garlic powder if using.

3. Cook the patties: Wipe out the skillet if needed and set over medium-high heat. Cook patties 2–4 minutes per side, until browned and cooked to your preferred doneness (about 160°F/71°C for well-done). Transfer to a plate.

4. Assemble the melts: Spread softened butter on one side of each bread slice. On the unbuttered side of 4 slices, layer: 1 slice cheese, a beef patty, a generous spoonful of caramelized onions, and another slice of cheese. Top with remaining bread slices, buttered side facing out.

5. Grill until crisp and melty: Reduce heat to medium. Working in batches if needed, cook sandwiches 3–5 minutes per side, pressing lightly with a spatula, until the bread is deeply golden and the cheese is fully melted. If browning too fast, lower heat; steady heat is the key to melted cheese without burning.

6. Serve: Rest 1 minute, slice in half, and serve with mustard and pickles if desired.

## Tags

`Main Dish`, `Make Ahead`, `American`, `Stovetop`, `Dinner`, `Lunch`, `Beef`, `Grilled`

---

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*View this recipe: [https://save.cooking/@american_classic/patty-melt-with-caramelized-onions](https://save.cooking/@american_classic/patty-melt-with-caramelized-onions)*