Slice trimmed asparagus into 1-inch diagonal pieces. Heat oil in a 10-inch nonstick skillet and sauté asparagus and scallions about five minutes.
Blend egg substitute, cheese and mint. Pour over asparagus and scallions in skillet and cook on medium heat, gently pulling sides back from skillet to cook egg substitute throughout. Cover skillet with lid once egg mixture is half-cooked. Use a spatula to divide into fourths, and turn once.