Preheat oven to 400°F. Line a baking sheet with parchment paper or spray a baking sheet with nonstick spray. Set aside.
In a medium bowl combine the potatoes, oil, thyme, and pepper. Mix until the potatoes are evenly coated.
1 cup cubed red potatoes, 1 cup cubed white potatoes, 1 tablespoon olive oil, ½ teaspoon dried thyme, ½ teaspoon ground black pepper
Pour the potatoes onto the prepared baking sheet. Spread them into an even layer.
Bake the potatoes for 20 minutes, until golden brown.
While the potatoes cook, melt the butter in a cast iron skillet set over medium-high heat. Add the onions and cook for 2-3 minutes.
2 tablespoons salted butter, 1 white onion
Add the corned beef to the skillet and cook for another 4-5 minutes.
2 cups cubed fresh corned beef
When the potatoes are golden brown, remove them from the oven and add to the skillet. Mix well and cook for 2-3 minutes. Serve with parsley and enjoy.
chopped fresh parsley