Copycat Freddy’s Smoky Bacon Cheddar Stack (Bacon Fest 2026)
Freddy’s Smoky Bacon Cheddar Stack is back for Bacon Fest 2026, running September 2 through November 3 at participating Freddy’s locations nationwide. If you don’t have a Freddy’s nearby — or if you want the full stack any day of the week, not just during the LTO window — this recipe gets you there in under 25 minutes.
The build: two hand-pressed steakburger patties with melted sharp cheddar, four crispy Applewood bacon strips, grilled white onions, and Freddy’s Smoky Fry Sauce on a toasted King’s Hawaiian bun. Every component earns its place. The smash technique on the patties produces the signature lacy, Maillard-crisped crust that makes Freddy’s distinct from a typical fast-food burger. The Smoky Fry Sauce — mayo and ketchup spiked with smoked paprika and pickle juice — mirrors the Applewood bacon and ties the stack together. The King’s Hawaiian bun brings a restrained sweetness that balances the salty-smoky stack, but only if it’s toasted.
This recipe also walks you through the smashing technique in enough detail to use it for any smash burger, not just the Freddy’s version.
What Makes Freddy’s a Steakburger
Freddy’s calls their burgers “steakburgers,” a term rooted in the Steak ‘n Shake tradition. It means a thin, flat beef patty cooked on a hot flat-top griddle — hand-pressed at order time, not formed into thick rounds in advance. The defining characteristic is the crust-to-interior ratio: a thin patty has far more surface area in contact with the hot griddle per ounce of beef than a thick patty does. More surface contact means more Maillard reaction, which means more of the deeply savory, browned flavor that makes burgers taste like burgers.
At home, the technique is the same as a smash burger: a loosely formed ball of 80/20 beef, pressed immediately onto a screaming-hot cast iron to about ⅓-inch thin. The fat renders into the pan instantly and the patty fries in its own fat for the first two minutes. The edges go lacy and brown. The flip is once, not twice, and you don’t press after the flip.
The Smoky Fry Sauce
Freddy’s makes two fry sauces: the regular Fry Sauce (mayo, ketchup, seasoning salt, pickle juice) and the Smoky Fry Sauce used on Bacon Fest items. The difference is smoked paprika — the hickory-smoked seasoning that runs through the sauce gives it the same wood-fire register as the Applewood bacon. It’s still the same creamy, tangy, slightly sweet mayo-ketchup base; the smoke just adds a bottom note that makes the sauce feel like it belongs on a bacon burger specifically, not just any dipping sauce.
The home version comes together in 5 minutes and keeps for a week. Make more than you need — it’s the best thing on Freddy’s fries too.
Build Order Matters
The stack has a specific order for a reason: sauce on both buns, then patties (cheese-side up), then grilled onions on top of the cheese, then the bacon crowning the pile. Put the onions above the cheese so their moisture doesn’t soak into the crust of the patty, and lay the bacon last so the crisp strips sit right under the top bun where you bite into them first. Sauce on both the crown and the heel means every bite gets it — sauce on only one side leaves half the sandwich dry. Build it the moment the second patty comes off the griddle; a smash patty’s crust is at its best in the first three minutes and softens as it sits.
Common Mistakes That Kill the Crust
The number one reason a home smash burger comes out gray and steamed instead of brown and lacy is a pan that isn’t hot enough. Give the cast iron a full 2–3 minutes over high heat before the beef touches it. The second mistake is packing the beef balls tight — a loosely formed ball spreads thin and laces at the edges; a dense puck resists the smash and cooks up thick. The third is pressing after the flip, which squeezes out the juices you just worked to keep in. Smash once, hard, at the start; flip once; leave it alone after that.
