Chocolate Snickerdoodles

Ingredients

• 2 3/4 cups all-purpose flour
• 1 tsp vanilla extract
• 2 large eggs
• 1/2 tsp salt
• 1 cup butter, room temperature
• 1/4 cup granulated sugar
• 1/2 cup unsweetened cocoa powder
• 1 tsp baking soda
• 1 1/2 tsp cream of tartar
• 1/2 cup brown sugar, packed
• 1/2 tsp baking powder
• 1 cup granulated sugar
• 1 Tbsp ground cinnamon