Begin by cooking the penne pasta according to the package instructions in a large pot of salted boiling water. Once cooked, drain and set aside.
In a large skillet, heat the olive oil over medium-high heat. Add the thinly sliced beef sirloin and season with salt, black pepper, and paprika. Cook for about 4-5 minutes until browned. Remove the beef from the skillet and set aside.
In the same skillet, add sliced onions and bell peppers. Cook for 5-7 minutes, stirring frequently until the vegetables are soft.
Add minced garlic to the skillet and sauté for an additional minute until fragrant.
Return the cooked beef to the skillet with the vegetables. Pour in the beef broth and the heavy cream. Stir gently to combine and let it simmer for 3-4 minutes.
Once the sauce has thickened slightly, add the cooked penne pasta and 1 cup of shredded provolone cheese. Stir until the pasta is evenly coated and the cheese has melted.
Taste and adjust the seasoning if necessary. Add more salt or pepper to your liking.
Serve the pasta in bowls, garnished with the remaining provolone cheese and fresh parsley if desired.