Line a Swiss roll pan with aluminum foil, set aside
Preheat oven 325 F
Cream shortening, margarine, and sugar until just combined
Stir in sifted flours and nuts meal, lightly, to just combine.
Spread dough on prepared Swiss roll pan, line a parchment paper on top of dough, and pat all over, remove paper.
Mark into squares and place hazelnuts on each mark. You don't have to press them in, but it helps to reassure they won't fall of once you pick them up when serving 😉
Bake for 30-40 minutes
Take out and slice again right on the marks you made previously, then cool completely on the pan, over cooling rack.