Simplify the following text for a Grade 7 native English-speaking person.
Original: The sandwich consists of an egg patty , processed cheese slice , either bacon or sausage as the topper , and is placed on either a biscuit or bagel to wrap it up .
Simplified: This is made of an egg patty , processed cheese slice , either bacon or sausage , and either a biscuit or bagel , it has sold well .