okay, so I've found that in order for them to not be too dry, you have to beat the (super softened)butter and powdered sugar for a while, so that it's really light and fluffy. Then I added only 1/2 cup pecans, (I bought them chopped, then before opening the bag, I crushed them until they were almost dust) and the extract then blended, then slowly added flour...blending after each 1/4 cup I added. They were so moist! Super easy to roll into a ball. I made a second batch and instead of the vanilla I added 2 tsp of lemon extract. AMAZING. With the first batch I drizzled chocolate over them, then dusted with powdered sugar.