01 - In a medium bowl, combine steak cubes with olive oil, salt, black pepper, and smoked paprika. Set aside to marinate as potatoes are prepared.
02 - Heat olive oil in a large skillet over medium-high heat. Add quartered baby potatoes, season with salt and black pepper, and cook, stirring occasionally, until golden and fork-tender, about 12 to 15 minutes. Transfer potatoes to a plate and keep warm.
03 - Increase skillet heat to high. Arrange steak bites in a single layer, working in batches if needed. Sear undisturbed for 2 minutes, flip, and cook 2 to 3 minutes more until well browned to desired doneness. Remove steak bites and set aside.
04 - Reduce heat to medium. Add butter to the skillet. Once melted, add minced garlic and dried thyme, if using. Sauté for 30 seconds until aromatic.
05 - Return potatoes and steak bites to the skillet. Toss to coat in the garlic butter and heat through, about 1 to 2 minutes.
06 - Sprinkle chopped parsley over finished dish right before serving.