Preheat the oven to 375?F. Place a parchment paper on the cookie sheets.
Whisk together flour, oats, cream of tartar, baking soda, salt, and nutmeg. Set aside.
In a mixing bowl, cream butter and sugars until fluffy, add the corn syrup and eggs and beat well.
Add the dry ingredients to the butter mixture and stir until combined. Scoop the cookie dough into tablespoonful of balls. Roll them into the cinnamon sugar and place them on the prepared cookie sheet, 2-inch apart. Bake for 8-11 minutes. Rest the cookies in a sheet for 2-3 minutes, and transfer to a cooling rack and cool completely.
*To make the cinnamon sugar, mix sugar and cinnamon in a small bowl.