Ingredients
Method
Caramelize the Onions
- Heat olive oil in a saucepan over low-medium heat. Add sliced onions and cook slowly, stirring occasionally, until soft, golden, and caramelized (about 20–25 minutes). Set aside.
Make the Au Jus
- To the same pan, add beef broth, red wine, rosemary, thyme, garlic, soy sauce, and Worcestershire.
- Bring to a gentle simmer and cook for 10–15 minutes until slightly reduced and deeply savory.
- Strain the au jus to remove herbs and garlic. Return liquid to the pan and keep warm.
Sear the Steak
- Season steak generously with Montreal steak seasoning.
- Heat olive oil and butter in a skillet over high heat. Sear steak quickly — about 2 minutes per side — just barely browned. It should feel scarily quick. But don't overcook here or you lose the juiciness. It will keep cooking in the au jus, and on a plate so make it quick!
- Remove from heat. Add steak directly into the warm au jus and let it soak briefly to absorb flavor without overcooking.
Prepare the Bread
- Mix melted butter, garlic, paprika, onion powder, salt, pepper, and parsley.
- Brush generously on the inside of the bread.
- Toast cut-side up in the oven or toaster oven for a few minutes until lightly golden.
- Remove bread from oven. Add provolone to BOTH sides of the bread.
- Return to oven until melted and bubbly.
Assemble
- Pile steak high onto the bread. Add caramelized onions and mayo if using.
- Close sandwich, slice, and serve immediately with a personal bowl of au jus for dipping (not optional). I like to use sandwich sticks to keep it all together if possible! Stick the sticks in both sides and slice down the middle.
Notes
- The steak soaking step is key
- Use Italian bread, baguette, or focaccia
- If you want it extra rich, brush the outside of the bread lightly with butter or au jus before final toasting
- don't be skimpy on the red wine!
