Steak and Eggs Hash by Tasty

Ingredients 2 lb yukon gold potato, peeled and cut into 1/2 in (1 1/2 cm)cold water, for cooking potatoes1 ½ tablespoons kosher salt, divided1 top sirloin steak1 ½ teaspoons freshly ground black pepper, divided2 tablespoons unsalted butter, divided1 tablespoon canola oil½ small yellow onion, thinly sliced8 oz cremini mushroom, steemed and quartered1 small red bell pepper, seeded and diced1 teaspoon fresh oregano, chopped1 cup cherry tomato,