Boil pasta shells in salted water until al dente, then drain and set aside
Pat steak pieces dry and season with salt, pepper, and paprika
Heat olive oil in a large skillet over medium-high heat
Sear steak pieces in a single layer for 2–3 minutes per side until browned
Remove steak from skillet and set aside
In the same pan, melt butter and sauté chopped onion until soft
Add minced garlic and cook briefly until fragrant
Stir in smoked and sweet paprika to release flavor
Pour in beef broth and simmer for a couple of minutes
Add heavy cream and cook until slightly thickened
Stir in Parmesan cheese until melted and smooth
Return steak to the skillet and coat in the sauce
Add cooked pasta shells and toss everything together
Garnish with fresh parsley and serve warm