Can I use a different cut of steak?
Yes. Thinly sliced ribeye, sirloin, or even deli roast beef work well. The key is slicing thin so it cooks quickly and absorbs the flavors.
Can I make this ahead?
Prepare the steak and vegetable mixture up to 2 days ahead; store separately from the tortellini. Combine and warm the sauce just before serving to prevent pasta from becoming mushy.
What cheese can I substitute?
Swiss, Asiago, or American cheese work as replacements for provolone. Avoid pre-shredded cheese with anti-caking agents; use block cheese shredded fresh for best melting.
How do I prevent the sauce from breaking?
Keep heat at medium or lower once cream is added. Stir occasionally and avoid boiling vigorously, which can separate the dairy.
Can I scale this recipe?
Yes. Double all ingredients for 8 servings, or halve for 2. The cooking times remain roughly the same; just watch the sauce consistency and adjust cream if needed.