Pat the steak cubes dry with paper towels and season with 1/2 teaspoon salt, 1/4 teaspoon black pepper, smoked paprika, and dried thyme. Set aside.
Heat 1 tablespoon olive oil in a large skillet over medium-high heat.
Add the halved baby potatoes to the skillet, cut side down, and season with 1/2 teaspoon salt and 1/4 teaspoon black pepper.
Cook the potatoes without stirring for about 10 minutes, until they are golden brown and tender when pierced with a fork. Stir occasionally after the initial sear to cook evenly.
Push the potatoes to one side of the skillet and add the remaining 1 tablespoon olive oil.
Add the seasoned steak bites to the skillet in a single layer and cook for 2-3 minutes without stirring to get a good sear.
Flip the steak bites and cook for another 2-3 minutes until cooked to your desired doneness.
Add the minced garlic and butter to the skillet, stirring everything together for 1-2 minutes until the garlic is fragrant and the butter is melted and coating the steak and potatoes.
Remove the skillet from heat and sprinkle with chopped fresh parsley.
Serve immediately.