Boil the pasta in a large pot of salted water according to package instructions. Drain and set aside once it reaches al dente.
Step 2: Sear the Steak
Heat the olive oil in a large skillet over medium-high heat.
Add the steak slices (or ground beef if using), seasoning with a bit of salt and pepper. Cook until browned on both sides, about 2-3 minutes per side. Remove the steak from the skillet and set aside. If you used ground beef, drain any excess grease.
Step 3: Sauté the Vegetables
In the same skillet, add a bit more olive oil if needed.
Add the sliced onion and bell pepper and cook until softened and slightly caramelized, about 5-7 minutes. Add the garlic and cook for an additional minute, until fragrant.
