Layer 1
1 cup all-purpose flour
1/2 cup margarine
1/2 cup chopped pecans

Mix like pie dough. Spread in 12 x 9-inch pan and bake at 375 degrees F for 15 minutes. Let cool slightly. While still warm, mix and spread Layer 2.

Layer 2
1 cup confectioners' sugar
8 ounces cream cheese (at room temperature)
1 cup frozen whipped topping, thawed

Mix sugar and cream cheese. Fold in whipped topping. Spread on top of Layer 1.

Layer 3
2 small boxes instant lemon pudding
3 cups milk

Mix and pour over Layer 2.

Layer 4
Spread remaining whipped toping over top. Sprinkle with chopped pecans. Refrigerate overnight, or for at least 12 hours.