Add softened cream cheese to a large mixing bowl. Using a hand mixer, whip cream cheese until light and airy.
Using a sharp knife and cutting board, dice the green onion very small. (Use only the green parts for a mild onion flavor, or the white and green parts for more bold flavor.)
Reserving 1/2 cup of cheddar, add remaining ingredients, including green onion, to the bowl and continue mixing until combined.
Using a spatula or the back of a spoon, shape the ball into a rounded ball. (It's ok to leave the bottom of the ball flat.)
Press the remaining cheddar onto all sides of the cheese ball. Using plastic wrap, press the cheddar into the cheese ball. Cover the cheese ball with plastic wrap, and refrigerate for at least 1 hour to allow ball to set.
Serve with crackers, vegetables, cheese slices, or deli meats.