Preheat oven to 375 degrees. Using an electric mixer, beat butter or margarine and sugar together in a medium mixing bowl until light and fluffy. Add eggs; mix well.
Combine oats, flour, baking soda and salt in a separate mixing bowl. Add to butter mixture in several additions, mixing well after each addition. Stir in sweetened-dried cranberries and white chocolate chunks.
Drop by rounded teaspoonfuls onto ungreased cookie sheets. Bake for 10-12 minutes or until golden brown. Makes 2 -1/2 dozen cookies.