After making these cookies a few times, I realized that different brands of flour will yield slightly different results. My initial batch used Bob's Red Mill whole wheat pastry flour. Slightly more flour may be required when using different brands, so have a bit extra on hand and add as needed until your dough is the right consistency.
Yield of 24 cookies is based on the use of large cookie cutters. Smaller cookie cutters will yield 3-4 dozen cookies.
If you aren't into maca or just don't have any on hand, you could probably get away with leaving it out. Add more flour as needed to get the right dough consistency.