Bacon Jam Patty Melt

What Is a Bacon Jam Patty Melt?

A bacon jam patty melt is a diner-style sandwich with a beef patty, sharp cheddar, caramelized onions, and molasses bacon jam griddled on sourdough until crispy. This is a Grill Nation take on the diner classic — the traditional patty melt uses Swiss cheese, rye bread, and Thousand Island dressing. James’s version swaps in sharp cheddar, sourdough, and a from-scratch molasses bacon jam that acts as the sauce. The bacon jam is the angle — every other version of this sandwich on the internet has been done a thousand times.

What Is a Patty Melt?

A patty melt is a diner sandwich of a thin beef patty, melted cheese, and caramelized onions on buttered bread griddled until crisp. The dish dates to 1940s American diners (often credited to Tiny Naylor in California) and has stayed mostly unchanged since: griddled bread, smashed thin beef, slow-cooked onions, melted cheese. The sandwich format is what distinguishes it from a burger — no bun, no lettuce or tomato. Griddled bread does the work.

Patty Melt vs Burger: What’s the Difference?

A patty melt is served on griddled sandwich bread with caramelized onions, not on a bun. The patty is also thinner and wider — it spreads to the bread edges instead of stacking tall. Burgers lean on fresh toppings (lettuce, tomato, pickles, onion) and a soft bun. Patty melts lean on the bread crisping in butter and the slow-cooked sweetness of the onions melding into the cheese. Different sandwich, different experience.

The Bread Debate: Best Bread for Patty Melt

Rye is the traditional choice, but hearty sourdough crisps beautifully and holds up to the beef and bacon jam. Rye has the classic diner association — that signature dark, slightly sweet bread is what most people picture. Sourdough does something rye doesn’t: it develops a much crispier exterior in butter on a griddle, and the tang from the sourdough culture cuts through the rich beef, cheese, and jam better than rye does. For this sandwich, with this much going on between the bread, sourdough is the right move.

Best Cheese for Patty Melt

Swiss is the classic patty melt cheese; this recipe uses sharp cheddar for a bolder, smoother melt. Swiss has the diner heritage and a nutty, mild flavor that lets the onions and beef stand out. Sharp cheddar brings more punch — the tangy, salty kick stands up to the molasses bacon jam in a way Swiss can’t. The melt is also smoother and the cheese pull is significantly better with cheddar.

Shred From a Block

Freshly shred sharp cheddar from a block instead of using pre-shredded. Pre-shredded cheese is coated with cellulose and anti-caking agents that block clean melting and dull the cheese pull. Block cheese melts smoother and creates the cheese pull this sandwich was built around — both for flavor and for the social media shots.

What Is Bacon Jam?

Bacon jam is a thick, sweet-savory spread made by slow-cooking bacon with onions, sugar, vinegar, and (here) molasses until sticky. It is essentially a savory preserve — the same techniques used to make traditional fruit jam, applied to bacon and onions. The end result is a glossy, jam-textured spread that works on sandwiches, burgers, grilled cheese, eggs, biscuits, and pretty much anything else you can imagine wanting bacon on. We’ve used the same scratch bacon jam in our bacon jam cheeseburger egg rolls — a totally different format that proves how versatile the spread is.

What Is Molasses Bacon Jam Made Of?

Molasses bacon jam is slow-cooked bacon, caramelized onion, garlic, molasses, brown sugar, and apple cider vinegar simmered until thick and sticky. The molasses is the differentiator. Most bacon jams use only brown sugar for sweetness, but Grandma’s Molasses adds a deep caramelized, smoky-sweet backbone that brown sugar alone can’t deliver. The apple cider vinegar cuts the sweetness, the garlic adds savory depth, and a pinch of cayenne brings background heat.

How Do You Make Bacon Jam?

Crisp diced bacon, caramelize onions in the rendered fat, then simmer with molasses, brown sugar, vinegar, and the bacon until thick and glossy. The whole process runs about 30 minutes. Use thick-cut bacon — it gives the jam better texture and produces crispy bites throughout the spread instead of dissolving into the sauce. This same scratch bacon jam is what we layer on our best bacon jam smash burgers — once you’ve got the technique, the jam itself becomes a base recipe you can build a dozen other dishes on.

Bacon Jam Ingredients

The full ingredient list is 1 pound of thick-cut bacon (diced), 1 large sweet onion (thinly sliced), 3 garlic cloves (minced), a quarter cup of Grandma’s Molasses, 2 tablespoons of brown sugar, 2 tablespoons of apple cider vinegar, half a teaspoon of black pepper, and an optional quarter teaspoon of cayenne. The molasses gives the jam a rich caramelized finish and deep smoky sweetness that pairs perfectly with beef and cheddar.

Let the Bacon Jam Slightly Cool

Pull the jam off the heat and let it sit for a few minutes before using. The jam thickens as it cools, making it easier to spread on the bread and intensifying the flavor as the ingredients meld. Spreading the jam straight off the heat gives you a thinner, looser sauce that runs off the patty. A few minutes of rest fixes that.

Can You Make Bacon Jam Ahead of Time?

Yes — store airtight in the fridge up to 5 days, or freeze in a freezer-safe container up to 2 months. The jam actually improves after a day in the fridge as the flavors continue to meld. Reheat gently before using either on the stove or in the microwave with a small splash of water to loosen it back up.

Don’t Rush the Onions

Caramelize the onions low and slow for 15 to 20 minutes. This is the step that separates a great patty melt from a mediocre one. Real caramelized onions need time — they go through a phase where they look done but actually aren’t, and another where they look almost burnt but are at the deepest, sweetest flavor of the whole cook. Stick with them through both phases.

What Caramelization Looks Like

Properly caramelized onions are deep golden brown to mahogany, soft enough to spread like a paste, and sweet enough to eat by the spoonful. Pale, soft onions are sweated onions, not caramelized. Real caramelization takes the full 15 to 20 minutes over medium-low heat with occasional stirring. Don’t rush it. Don’t crank the heat. This step is the soul of the sandwich.

The Beef: 80/20 Ground Beef, Thin Patties

Use 80/20 ground beef. The 20% fat content keeps the patties juicy when pressed thin and develops the crust this sandwich relies on. Divide the beef into 4 equal portions and flatten into thin patties slightly larger than the sourdough slices — the patty should reach the bread edges. Season generously with salt and black pepper. Sear on a hot griddle for 3 to 4 minutes per side until a real crust forms.

Can You Make a Patty Melt on a Griddle?

Yes — a Blackstone or flat-top griddle gives even browning and a crisp, buttery crust on the bread. The flat surface lets you cook the patties, caramelize the onions, and toast the assembled sandwiches all in one space. A Blackstone patty melt cooks faster than a cast-iron version because the heat distribution is more even and you can manage temperature zones across the griddle. Cast iron also works exceptionally well — heavy bottom, even heat retention, perfect crust development. Use whichever you have.

Assembling the Sandwich

Butter one side of each slice of sourdough. The build order, bottom to top: bread (buttered side down), cheese, beef patty, bacon jam, caramelized onions, more cheese, second slice of bread (buttered side up). The double-cheese assembly puts cheese on both sides of the patty so it melts into everything as the sandwich toasts. This is what gives you the all-the-way-through cheese pull instead of cheese only on one side.

Why Medium Heat When Toasting

Medium heat crisps the bread without burning it before the cheese fully melts. Too hot and the sourdough scorches dark brown while the cheese is still cold in the middle. Too cool and the bread softens and stays pale. Medium gives you the window — about 3 to 4 minutes per side — to develop a deep golden crust on the bread while the heat soaks all the way through to melt the cheese on both sides of the patty.

Press Lightly With a Spatula

While the sandwich toasts, press gently with a spatula every minute or so. The light pressure squishes the cheese into contact with the patty and onion layers, accelerates the melt, and compresses the bread against the hot griddle for maximum crisp. Don’t press hard — you’ll squeeze the filling out the sides. Light, repeated pressure is the move.

Sourdough Patty Melt: The Bread Choice That Matters

This sourdough patty melt is built around the bread doing real work. The thick crust on a sourdough loaf crisps in butter on a griddle better than soft sandwich bread, and the open crumb structure holds the bacon jam without going soggy. Use a hearty sourdough — supermarket pre-sliced sourdough works, but a bakery loaf sliced 3/4-inch thick is the upgrade.

Bacon Jam Patty Melt Pro Tips

1. Use Thick-Cut Bacon

Thick bacon gives the bacon jam better texture and creates crispy bites throughout the sandwich. Standard-cut bacon dissolves into the jam too much.

2. Don’t Rush the Onions

Low and slow caramelized onions build incredible flavor and pair perfectly with the molasses bacon jam. 15 to 20 minutes — not 5.

3. Shred Sharp Cheddar From a Block

Freshly shredded cheddar melts smoother and creates the best cheese pulls for both flavor and social media shots. Pre-shredded cheese has anti-caking agents that block clean melting.

4. Medium Heat Is Key

Too much heat burns the sourdough before the cheese melts. Medium heat gives you the perfect crispy exterior with full melt throughout.

5. Let the Bacon Jam Slightly Cool

The bacon jam thickens as it rests, making it easier to spread and more flavorful. Don’t try to spread it hot off the heat.

6. Press Lightly

A light spatula press while toasting accelerates the cheese melt and crisps the bread. Don’t press hard — light, repeated pressure.

Bacon Jam Patty Melt Variations

Bacon Jam Grilled Cheese

Skip the patty entirely and build a bacon jam grilled cheese with cheddar, the molasses bacon jam, and a layer of caramelized onions on sourdough. Faster and just as good for lunch.

Bacon Jam Burger

Use the bacon jam as a burger topping instead of building the patty melt. The jam works beautifully on a smash burger or a thick burger patty with cheese and pickles. For a slider take on this same flavor pairing, our bacon jam cheeseburger sliders are a great party-portion version, and for a smoker take, our smoked bacon jam burgers pull this same scratch jam onto a hardwood-smoked patty.

Add a Fried Egg

Top the patty with a runny fried egg before the second slice of bread for a breakfast-style patty melt. The yolk works with the jam in a way that’s hard to describe and impossible to forget.

What to Serve with Patty Melts

Crispy fries, kettle chips, a sharp coleslaw, dill pickles, or a simple side salad. The sandwich is rich and indulgent, so crunchy or acidic sides balance the plate. For a holiday-leaning take on the same bacon jam concept, our smoked ham sliders with cranberry bacon jam swap the beef for smoked ham and add cranberry to the jam — a totally different application of the same scratch technique.

Want more ways to use bacon jam? Try these favorites: The Best Bacon Jam Smash Burgers, Smoked Ham Sliders with Cranberry Bacon Jam, Bacon Jam Cheeseburger Egg Rolls, and Bacon Jam Cheeseburger Sliders.

Step-by-Step Instructions

Step 1: Make the Molasses Bacon Jam

Place a cast iron skillet or griddle over medium heat. Add the diced bacon and cook until crispy, stirring occasionally. Remove excess grease if needed, leaving about 2 tablespoons in the skillet.

Step 2: Caramelize the Onions for the Jam

Add the sliced sweet onions to the bacon fat. Cook low and slow for 15-20 minutes until deeply caramelized and golden brown. Stir occasionally.

Step 3: Finish the Bacon Jam

Stir in the garlic, Grandma’s Molasses, brown sugar, apple cider vinegar, black pepper, and cayenne. Add the bacon back into the skillet and simmer 5-7 minutes until thick, glossy, and sticky. Remove from heat and let the jam slightly thicken as it cools.

Step 4: Caramelize the Patty Melt Onions

While the bacon jam finishes, add the second batch of sliced onions to a lightly buttered skillet over medium-low heat. Cook 15-20 minutes until soft, golden brown, and deeply caramelized.

Step 5: Cook the Beef Patties

Divide the ground beef into 4 equal portions. Flatten into thin patties slightly larger than the bread slices. Season generously with salt and black pepper. Cook on a hot griddle over medium-high for 3-4 minutes per side until a crust forms.

Step 6: Assemble the Patty Melts

Butter one side of each slice of sourdough. Layer in this order: sourdough (buttered side down), cheddar, beef patty, molasses bacon jam, caramelized onions, more cheddar, second slice of sourdough (buttered side up).

Step 7: Toast Until Crispy

Place the sandwiches on the griddle or skillet over medium heat. Cook 3-4 minutes per side until golden brown and crispy while the cheese fully melts. Press lightly with a spatula for maximum crisp and melt. Slice and serve immediately.