To me, toasted pine nuts taste exactly like pie crust. Except, just a little bit better. (And better for me, I'm sure, than flours and oil.)
So when I want 'pie,' winter or summer, I just put fresh berries into a bowl, sprinkle on a bit of icing sugar, and top with still-warm toasted pine nuts, straight from the skillet.
Pie-in-a-bowl. You must try it.