Preheat your grill or grill pan over medium-high heat.

In a large bowl, toss the sliced red onion with 1 tablespoon of olive oil, salt, and pepper. Set aside.

In a small bowl, mix the softened butter with smoked paprika, a pinch of salt, and a pinch of pepper. Stir until well combined. Set aside.

Rub the top sirloin steaks with the remaining tablespoon of olive oil and season generously with salt, pepper, and dried oregano.

Place the steaks on the grill and cook for about 4-5 minutes on each side for medium-rare, or until your desired doneness is reached.

While the steaks are grilling, add the red onion rounds to the grill. Grill for about 4-5 minutes on each side, or until charred and softened.

Once the steaks are done, remove them from the grill and let them rest for about 5 minutes.

Slice the steaks against the grain and serve topped with the charred red onions and a dollop of smoked paprika butter.

Garnish with fresh oregano leaves before serving.