In a food process add 1/2 cup of the almonds and process into a fine powder. Pour into large bowl.
Add remaining almonds to food processor along with walnuts and pulse until finely chopped. Pour into bowl.
Combine the remaining dry ingredients into the bowl and stir well.
Add the remaining wet ingredients and mix well until everything is well moistened. Spread onto a parchment lined baking sheet, and with oiled hands firmly press out to 1/2" thick.
Bake at 275°F for 30-40 minutes, or until lightly golden and top is crisp.
Allow to cool completely before breaking into pieces.