Step 1 In a large bowl, with a wooden spoon, mix together the pumpkin puree, one-third cup sugar, the brown sugar, cream, eggs, honey, cornstarch, ginger, cinnamon, nutmeg, cloves and salt. Mix until well blended. Set aside.
Step 2 Heat the oven to 350 degrees. Place the graham cracker crumbs into a large bowl. Add the flour and the remaining 1 tablespoon sugar and, with your hand, mix to combine.
Step 3Add the melted butter in a stream into the middle. With your hand or a large spoon, mix all ingredients until a paste-like dough is formed.
Step 4Fill the tart pan by patting the dough into the bottom of the pan and around the sides. Chill 10 minutes in the refrigerator. Pour the filling into the crust. Bake about 25 minutes. The pumpkin should be firm around the edges but still soft in the center. Allow to cool, then chill overnight.