Sift together 2 C. flour and 2/3 C. powdered sugar. Cut in butter just till it resembles coarse meal. Put mixture on bottom and 1 ½ inches up sides of a lightly greased 13 X 9 in. pan. Bake at 350° for 20 minutes, or until edges are lightly browned. Bring brown sugar, honey 2/3 C. butter and whipping cream to a rolling boil over medium high heat. Stir in pecans and pour hot filling into crust. Bake @ 350° for 25-30 minutes till golden and bubbly. Cool before cutting.