1Cut butter into the flour and the 4 tbs.sugar until fine. Press firmly into ungreased metal pan 9x13. Bake at 350 for 15-20 min. until set but not brown. Combine in mixing bowl the 4 beaten eggs,the brown sugar,coconut, nuts, salt, baking powder, and vanilla-mix well. Spread on partially baked dough. Bake at 350 25 to 30 min. Frost immediately. Cool
Combine the lemon rind, lemon juice and powdered sugar-mix until smooth.