🔵 Step 1: Freeze the beef for 20–30 minutes to make thin slicing easier.

🔵 Step 2: Heat 2 tablespoons of vegetable oil in a large sauté pan over medium-low heat. Add onions and bell peppers, stirring occasionally until tender.

🔵 Step 3: Remove the beef from the freezer, trim excess fat, and slice thinly against the grain. Chop slices into small ¼-inch pieces.

🔵 Step 4: Once veggies are cooked, transfer them to a dish. Add more oil to the pan and cook half the steak over medium-high heat for 4–5 minutes, seasoning as you go. Repeat with remaining steak.

🔵 Step 5: Preheat the oven to 400°F. Butter and lightly toast the hoagie rolls on a baking sheet for 3–5 minutes.

🔵 Step 6: Return steak, peppers, and onions to the skillet. Top with provolone slices, cover, and cook on medium until cheese melts. Stir gently to combine.

🔵 Step 7: Pile the mixture onto toasted rolls and serve immediately.