Chewy snickerdoodles

1 cup unsalted butter, room temp
1 1/2 cups sugar
2 large eggs, room temp.
1 1/2 cups flour
1 1/4 cups bread flour
2 teaspoons cream of tartar
1 teaspoon baking soda
1/4 teaspoon salt
3 tablespoons sugar
3 teaspoons cinnamon

36 cookies
Preheat oven to 350

Whip butter until fluffy. Add sugar slowly to butter until combined. Butter should be very pale and fluffy. Add eggs one at a time. Mix flour, cream of tartar, and salt together in a separate bowl. Add flour mixture to butter mixture slowly. Chill dough and cookie sheet 15 min. Roll 1 inch balls of dough in cinnamon/sugar. Bake for 10 min. Let set on cookie sheet 2 min. Cool on wire rack.