Preheat oven to 450 F
Line a baking sheet with foil and spray with non-stick cooking spray
Wash each potato thoroughly and pat dry
Cut a small amount off of one side of each potato so that they can stand upright on baking sheet
Using a fork, carefully pierce holes all over each potato
Bake for 40 minutes (add more time if potatoes are on the bigger side)
Remove from oven and allow to cool completely before handling
Cut the top off of each potato and carefully scoop the insides into a large bowl, returning the hollowed potatoes to the baking sheet
Add heavy whipping cream, melted butter, corned beef, cheese, salt and garlic powder to potatoes and blend using a hand mixer until well combined
Stuff potato mixture into each potato and continue baking in the oven for an additional 10 minutes
Remove from oven and top with sour cream, green onions and bacon pieces
Enjoy!