Preheat oven to 375 degrees. Using an electric mixer, beat butter and sugar together in a mixing bowl until light and fluffy. Add eggs, mixing 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 dried cranberries and white chocolate chips. Drop by rounded teaspoonfuls onto ungreased cookie sheet. Bake for 10 – 12 minutes or until golden brown. Cool on wire rack. Makes about 2 ½ dozen cookies.