Toss the strawberries with the sugar and cinnamon mixture in a medium-size mixing bowl and let it sit, covered, in the refrigerator overnight. 

Toast the walnuts in a skillet over a medium fire until the begin to brown. 

Preheat the oven to 400 degrees.  Divide the strawberries between the pie shells and sprinkle the walnuts over the top of each.  Place the pies in the oven for 5 minutes, then lower the oven temperature to 325 degrees and bake for 30 minutes.  Let cool, then place in the refrigerator overnight, or for at least 6 hours, before serving.