Meanwhile, in a saucepan, bring syrup, cream, and pecans to a boil with remaining butter and sugar and stir. Simmer for 2 minutes. Pour into pan over warm crust and bake for 20 minutes. Let cool. Run a thin blade around pastry and let cool completely. Remove from pan and cut into 36 squares. Store in an airtight container at room temperature for up to 2 weeks or freeze.