Preheat oven to 350°.
Place first 8 ingredients in a food processor, and process 1 minute or until smooth. Combine egg substitute mixture, cheddar cheese, ham, and green onions in a medium bowl; stir well. Pour mixture into 9-inch pie plate coated with cooking spray. Bake at 350° for 40 minutes or until set. Let stand 5 minutes before serving. Garnish with green onion slices and cherry tomatoes, if desired.