Citrus-forward Cuban steak sandwich with charred lime, garlic confit, caramelized onions, melted American cheese, and lime herb aioli on toasted Cuban bread.
Steak must register an internal temp of 145°F for food safety, but at palomilla thickness it will hit that well before 90 seconds per side -- pull it the moment both sides lose their raw color or it will toughen fast; carryover heat finishes the job.
Prep in this order: char the lime and start the garlic confit first, then build the marinade while the confit cools, so everything is ready before the steak goes in.
The most common mistake is over-marinating: the citrus acid begins to denature the thin steak past 90 minutes, giving it a mealy, ceviche-like texture instead of a tender sear.
If Cuban bread is unavailable, a soft hoagie or Portuguese roll is the closest substitute -- avoid ciabatta or sourdough, whose hard crust fights the soft steak filling.
The aioli and caramelized onions can both be made up to 2 days ahead and refrigerated; sear the steak to order and assemble just before serving so the Cuban bread stays crisp and the potato sticks stay crunchy.
Source: Gaither
Household verdict
Gaither★★★★☆↻ would make again
Meg★★★★★
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Added to the cookbook by Gaither · Jun 16, 2026 · Last touched by Gaither · Jun 19, 2026