01 -
Heat 1 tablespoon olive oil in a large skillet over medium-low heat. Add sliced onions and 0.25 teaspoon salt. Cook, stirring occasionally, until onions are deeply caramelized and jammy, 20–25 minutes.
02 -
If needed, partially freeze ribeye for easy slicing, then cut as thinly as possible against the grain. Hull and slice strawberries, keeping them separate.
03 -
Preheat oven to 175°C. Spread butter on the inside of the hoagie rolls, place on a baking sheet buttered side up, and toast until lightly golden, approximately 5 minutes.
04 -
In a cast iron skillet or griddle, heat remaining 1 tablespoon olive oil over high heat until just smoking. Add beef in a single layer (in batches if needed) and sear for 45 seconds without stirring.
05 -
Using metal spatulas, chop and flip the beef while cooking. Season with remaining salt and pepper. Cook until just barely pink, about 2–3 minutes.
06 -
Reduce heat to medium. Push steak to one side of the skillet and add caramelized onions to the meat. Toss together, then divide mixture into four equal piles.
07 -
Top each meat pile with sliced strawberries and drizzle with balsamic glaze. Warm for 30–45 seconds so strawberries soften but retain their shape.
08 -
Top each pile with 2 slices of provolone cheese. Cover with a large metal bowl or lid for about 30 seconds until the cheese melts thoroughly.
09 -
Transfer each melted cheese and steak pile onto a toasted hoagie roll. Drizzle with additional balsamic glaze if desired and serve immediately.