An almond meal is usually a coarse grind of whole raw almonds into a flour-like consistency that looks speckled with bits of almond skin. Almond flour is also made from almonds, but the grind is much finer (it almost looks like fine flour with a creamy tan) and is usually made from almonds with the skin removed (blanched almonds). In this bake, you want to use almond meal instead of almond flour to add a rich nutty, and almost buttery texture to these cake bars.