Ingredients
Method
- Season the steak with salt and pepper, rub with oil, and sear in a large skillet over high heat for 3 to 4 minutes per side. Transfer to a cutting board to rest.
- Reduce heat to medium, add 1 tbsp butter, and cook the onion and bell pepper with a pinch of salt for 8 to 10 minutes until softened and golden.
- Stir in garlic, then add the remaining 1 tbsp butter and the flour. Cook 1 minute, whisk in the milk and broth, and simmer 3 to 4 minutes until thickened.
- Off the heat, stir in Worcestershire, mustard, and the cheeses a handful at a time until smooth.
- Meanwhile, cook pasta in salted boiling water until al dente. Drain well.
- Slice the steak against the grain, then fold the steak, its juices, and the pasta into the cheese sauce. Serve immediately.
Notes
The sauce will tighten up as it sits, so if you need to hold it a few minutes, stir in a splash of warm milk right before serving. Slicing the steak while it is still a little warm helps it soak up the sauce better than cold steak straight from the fridge.
