If you were an 'obedient' student, then you will have made notes on the past lessons of the course. If this is so, then you don't have much to worry about. You see, by simply altering your notes and reformatting them a little, you can create a moderate review essay. I say moderate because this depends on the detail of your notes:

If you made extensive notes: No need to worry - by changing the wording and formatting slightly and adding extras, you can get away with only a little work and usually achieve a good mark as well.

If you made simple notes: Get your basics laid out and revisit the lessons to elaborate those notes. Also re-format and add to your notes and of course, reword the information.

If you wrote one-liners: Present these one-liners as bullet points and then add to them after revisiting the lessons.

Method Two:

(For the 'I just want to get this done' students)

Bullet points and short information paragraphs are best for a rushed review assignments. You must revisit the lessons, however, and have them open in one tab whilst writing. Copy the information in your own words and add pictures and colourful formatting. Work on the assignment after assessing the lessons and do it all in one go rather than leaving it. That way it's done as soon as possible to get a good mark.