Thank you Laura, I have made a note in the recipe.

i just made these today and had the same experience using store bought almond flour. dense and did not spread. i remade with whole almonds and had good results. perhaps worth noting in the recipe 

Yes, they freeze well for up to 3 months.

This happened everytime for me but then I realized it is the almond flour.  Almond flour is not the same as grinding up almonds.  Once I used ground almonds and not almond flour,  problem solved.