Defrost the hashbrowns in the fridge overnight. Squeeze the excess water out and set aside.
Preheat the oven to 350℉. Line a muffin tin with paper liners and spray with avocado oil.Combine the eggs, cream, cheese, hashbrowns, sea salt, and fresh chives in a large mixing bowl. Stir everything together until fully incorporated.
Using a ¼ cup measuring scoop, fill the muffin well to the top.
Place in the oven and bake for 18-22 minutes or until the egg bites are puffy and light golden brown. Remove from the pan to a cooling rack and let it cool fully before storing it in the fridge.