In a shallow bowl, beat together the egg, milk, salt, pepper, green onions and cilantro. Dip slices of bread into egg mix allowing the bread to soak up the eggy goodness. Melt a pat of butter or a touch of oil in a large skillet over medium-high heat. Add the soaked slices of bread and fry, flipping once, 2-3 minutes per side or until deeply golden brown and crispy. Enjoy warm with sriracha to taste.