Preheat oven to 350.
In a very large bowl using a hand mixer, cream butter and margarine. (The bowl of a standard stand mixer is not big enough for this full recipe.) Add sugars and beat until light and fluffy. Add egg and vanilla; mix well.
Alternate addition of dry ingredients and pumpkin, mix well after each addition. Stir in cranberries.
Drop by tablespoons (or medium cookie scoop) onto lightly greased cookie sheet. Bake for 15 minutes until cookies are firm and lightly browned. Makes about 55.
Bake
2000, 2007, 2015