Mine are flattish because I used all butter, as I had no shortening.
These are very cinnamony. If you want them less spicy, use 1/2 Tbsp sugar.
Grandma's Good Snickerdoodles (from cooks.com)
1/2 cup each butter and shortening, softened
1 1/2 cups sugar
1 1/2 tsp cream of tartar
1 tsp baking soda
1/4 tsp salt
2 3/4 cups flour
Cream butter, shortening, sugar, and eggs. Add cream of tartar, soda, and salt; stir to combine. Add flour and mix well. Chill 2 hours or overnight.
3 Tbsp granulated sugar
1 Tbsp cinnamon
Combine sugar and cinnamon in a shallow dish. Roll chilled dough into balls by tablespoon, then roll dough balls in sugar mixture.
Preheat oven to 375. Place balls on cookie sheets, 2 inches apart, and bake for 10-12 minutes.