Melt the butter in a 12" skillet over medium heat. Add the bell peppers and cook until it begins to brown slightly (approximately 5-6 minutes).
Add garlic, onions, corned beef and cabbage, thyme, oregano and black pepper to the skillet and stir to combine.
Once combined, spread the hash evenly over the pan and firmly press down with a metal spatula.
Cover with a splatter shield in between times of pressing down with the spatula....this will help to crisp the little bits.
After 8-10 minutes flip the hash over, dividing into sections, pressing down again. Allow to cook another 5-6 minutes, or until browned.
If desired, top each serving with a fried egg or two.
Season with salt and pepper to taste and top with freshly chopped parsley.
Serve immediately.