Put into oven, lowering the temperature to 250 degrees
Set timer for 3 minutes
Lower the temperature to 200 degrees
Set timer for 10 minutes
Test for doneness by slipping your finger under parchment paper and trying to lift a macaron off the paper
THEY SHOULD STILL BE WET UNDERNEATH !!!!!! (If not, you have made meringues, NOT macarons)
If you can lift it off, they are done
Take out of oven and cut the rows of macarons into strips
Carefully lift off macarons and transfer to sheets of clean parchment
This is easier when macarons are still warm