1/2 c. butter, softened
1/2 c. shortening
1 1/2 c. white sugar
2 eggs, room temperature
2 tsp. vanilla extract
Blend the above ingredients with a mixer until the lumps are gone and it's fluffy.
2 3/4 c. flour
2 tsp. cream of tartar
1 tsp. baking soda
1/4 tsp. salt
1 c. cinnamon chips
Whisk the above ingredients in a separate bowl from the butter/sugar mixture, then add to the sugar/butter mixture all at once. Stir together with wooden spoon until just combined.
3 Tbsp. white sugar
2 tsp. ground cinnamon
Combine these two ingredients in a small bowl or measuring cup, then pour it onto a plate. Roll dough into balls and then roll the ball in the cinnamon/sugar mixture. Place the balls of dough two inches apart on an ungreased baking sheet (or use parchment paper).
Bake in a 400-degree oven for eight minutes. Be careful not to overbake, unless you really like crumb-y cookies.
