-
Preheat the oven to 350 degrees F.
-
Crust:.
-
Cream butter and sugar in large mixing bowl, until light, approximately 3 minutes.
-
Add the eggs and the vanilla and mix well.
-
Sift together the flour, baking powder, and salt.
-
Mix the dry ingredients into the batter with the mixer on low speed until just combined.
-
Press the dough evenly into an ungreased 18 by 12 by 1-inch baking sheet, making an edge around the outside. It will be very sticky; sprinkle the dough and your hands lightly with flour.
-
Bake for 15 minutes, until the crust is set but not browned. Allow to cool.
-
Topping:.
-
Combine the butter, honey, brown sugar, and zests in a large, heavy-bottomed saucepan. Cook over low heat until the butter is melted, using a wooden spoon to stir. Raise the heat and boil for 3 minutes.
-
Remove from the heat. Stir in the heavy cream and pecans.
-
Pour over the crust, trying not to get the filling between the crust and the pan.
-
Bake for 25 to 30 minutes, until the filling is set.
-
Remove from the oven and allow to cool.
-
Wrap in plastic wrap and refrigerate until cold. Cut into bars and serve.