In a large pot, bring salted water to a rolling boil. Add the cheese tortellini and cook according to the package instructions, usually about 3-5 minutes. Once cooked, drain and toss lightly with a splash of olive oil to prevent sticking. Set aside.
In a large skillet, heat the olive oil over medium-high heat. Once hot, add the sliced onions along with the green and red bell peppers. Sauté for approximately 5-7 minutes, stirring occasionally, until the vegetables are soft and starting to caramelize.
Incorporate the thinly sliced beef sirloin into the skillet. Season generously with salt and freshly ground pepper. Cook for about 3-4 minutes until the beef is browned and no longer pink, ensuring the pieces are cooked evenly. Add in the minced garlic and sauté for an additional minute, until the garlic is fragrant.
Lower the heat and carefully pour in the beef broth along with the Worcestershire sauce, stirring to combine. Allow the mixture to simmer for 2-3 minutes, letting the flavors meld. Gradually introduce the softened cream cheese, stirring constantly until it fully melts and integrates into a luscious sauce.
Add the drained tortellini to the skillet with the cheesesteak mixture. Gently fold everything together until the tortellini is thoroughly coated in the creamy sauce.
Remove the skillet from heat and sprinkle in the shredded provolone cheese. Stir until the cheese is melted and evenly distributed throughout the dish. Taste and adjust seasoning with more salt and pepper as needed.
Serve the dish warm in individual bowls or on a large platter. Garnish with freshly chopped parsley to add a vibrant touch and serve immediately.
Notes
For a restaurant-style presentation, serve in a shallow bowl with a drizzle of olive oil and extra cheese on top.