Mrs. Hancock's famous peanut butter cookies call for 1 cup of peanut butter for every 1/2 of a cup of oil....

Mrs. Hancock's famous peanut butter cookies call for 1 cup of peanut butter for every 1/2 of a cup of oil. Today, she wants to make a huge batch with 1 cup of oil. How much peanut butter should she use?
Simplify your answer and write it as a proper fraction, mixed number, or whole number.