Preheat oven to 375°.

Measure oats into blender. Add chocolate bar and blend until oats are a fine powder and bar is broken into very small pieces.

Cream butter and sugars. Add eggs and vanilla, mixing well.

Add all dry ingredients, including nuts and chips or cranberries.

Drop by tablespoons on cookie sheet.

Bake for 9-10 minutes. Cool on wire rack.