Cookies will firm up as they cool.

1/2 c. butter, softened
1/2 c. sifted powdered sugar
1 c. all-purpose flour
1 (14 oz.) can sweetened condensed milk
1 (6 oz.) pkg. butterscotch pieces
1 (3 1/2 oz.) can flaked coconut (1 1/3 c.)
1 tsp. vanilla

Cream butter and sugar until fluffy; add flour and mix well. Pat into ungreased 9 x 9 x 2 inch baking pan. Bake at 350 degrees for 12 to 15 minutes. Combine milk, butterscotch pieces, coconut, and vanilla; spread over partially baked layer. Bake at 350 degrees until golden brown around edges, 25 to 30 minutes. (Cookie will not appear set.) Cool; cut into squares. Makes 36.