01 -
Cook the peeled, diced potatoes in boiling water until fork-tender. This takes around 5 to 10 minutes. Drain them well and set aside.
02 -
Melt 4 tablespoons of butter in a big pan over medium heat. Toss in the cooked potatoes, diced onions, salt, and pepper. Stir every now and then until the onions soften and both start turning golden, about 8-10 minutes.
03 -
Stir the corned beef, onion powder, and garlic powder into the pan. Combine everything well.
04 -
Use a spatula to gently press the mixture into a flat layer in the pan. Let it cook for 3-5 minutes without moving it, so a crispy, golden crust forms.
05 -
Scrape the bottom to flip sections of the hash, bringing the browned side up. Drop in the remaining 2 tablespoons of butter and stir it around.
06 -
Keep pressing down and browning the hash until it’s as crispy as you like. Usually, this takes about 3 rounds of pressing. Serve hot and enjoy!