Sift together 2 cups flour and 2/3 cup powdered sugar. Cut in 3/4 cup softened butter using a pastry blender or fork just until mixture resembles coarse meal. Pat mixture on bottom and 1 1/2 inches up sides of a lightly greased 13- x 9-inch baking dish.
Bake at 350° for 20 minutes or until edges are lightly browned. Cool.
Bring brown sugar, honey, 2/3 cup butter, and whipping cream to a boil in a saucepan over medium-high heat. Stir in pecans, and pour hot filling into prepared crust.
Bake at 350° for 25 to 30 minutes or until golden and bubbly. Cool completely before cutting into 2-inch squares.