cmagnus’ suggestion to microwave-dry herbs was so easy and successful that I just did all 4 cups of parsley this way. Did it 2 cups at a time in six 30-second increments at 80% power. Turned the paper towels at each 1-minute interval; changed towels at the 4th turn. Parsley came out perfectly dried, retained its color and strong parsley scent. Instead of taking two weeks, and leaching color and flavor, it took two minutes and it’s gorgeous.
Photos in order: fresh parsley, halfway through, dried parsley, in container (sprig for scale)