Melt 1 tablespoon of butter in a wok or large skillet set over medium heat. Add the onion, carrots, and peas. Cook for 4 minutes, until the onions and carrots are softened.
Add the garlic and ginger. Cook for 1 minute further until fragrant.
Push the vegetables to one side of the pan. Melt the remaining tablespoon of butter on the other side, then add the eggs and scramble until cooked through. Stir to combine with the vegetables.
Add the cooked rice, tamari, and Sriracha and stir-fry for 2 minutes. Sprinkle with green onions and serve.
Notes
Leftovers can be stored in the fridge for up to five days or in the freezer for up to three months.