In a large bowl, toss the steak cubes with garlic powder, onion powder, paprika, salt, and pepper.
Place the cubed potatoes in the bottom of a greased 6-quart slow cooker.
Add the seasoned steak on top of the potatoes in an even layer.
In a separate bowl, whisk together the condensed soup, beef broth, and 1 cup of the shredded cheddar.
Pour the mixture over the steak and potatoes. Use a spoon to gently nudge the sauce into the gaps.
Cover and cook on LOW for 6–8 hours or on HIGH for 3–4 hours, until the potatoes are tender.
Sprinkle the remaining 1 cup of cheddar over the top. Cover for another 15 minutes until melted and bubbly.
Garnish with fresh parsley and serve warm.