Heat oven to 375 degrees. Grease cookie sheet. In large bowl beat together butter, brown sugar and 3/4 cup white sugar until light and fluffy. Add eggs, mix well. Add flour, oats, 1 teaspoon cinnamon, soda and salt; and mix well.

Drop by rounded teaspoonfuls onto greased cookie sheet. Sprinkle each cookie with a mixture of remaining 1 tablespoon sugar and 1 teaspoon cinnamon. Bake 8 to 10 minutes. Cool 1 minute on cookie sheet; remove to rack to finish cooling. Makes about 4 1/2 dozen cookies.