1 1/2 cups shortening
1/2 cup butter
1 1/2 cups sugar
2 large eggs
2 3/4 cups all-purpose flour
2 teaspoons cream of tartar
1 teaspoon baking soda
1/4 teaspoon salt
Preheat oven to 400
Mix shortening and butter. Add sugar and cream thoroughly. Add eggs one a time till well incorporated. Mix flour, cream of tartar, baking soda and salt in a separate bowl. Add to butter mixture and blend well.
Use the medium cookie scoop to scoop out 1 inch balls and roll in the cinnamon sugar. I used Penzey's cake spice and sugar.
Place 2 inches apart on an ungreased cookie sheet. Bake 10 to 12 minutes.
These cookies puff up a bit, then level out.
Cool on wire racks. These travel well.