Step 1

Preheat oven to 400°F. Line a baking sheet with parchment paper.

Step 2

Beat butter, eggs, shortening, vanilla, and 1 ½ cups sugar at medium speed until creamy.

Step 3

Combine flour, baking soda, salt, and cream of tartar. Sift into butter mixture and mix to combine.

Step 4

In a separate bowl, stir together cinnamon and 2 tablespoons of sugar.

Step 5

Scoop 1 tablespoonful of dough and roll into a ball. Toss in cinnamon sugar mixture and place on baking sheet.

Step 6

Bake for 8-10 minutes. Cool completely before serving.