Step 1

In a bowl, sift together the flour, baking soda, baking powder, 1 teaspoon cinnamon and cream of tartar. Set aside.

Step 2

In a separate bowl, cream the butter and sugars until fluffy. Add the eggs, milk and vanilla. Mix well.

Step 3

Stir in the dry ingredients. Stir until just combined.

Step 4

Cover bowl (or remove dough from bowl and wrap in plastic wrap) and chill for at least one but not more than 24 hours.

Step 5

When ready to bake, Preheat the oven to 350 degrees.

Step 6

Form the dough into 1 inch balls. Mix cinnamon and sugar in a small bowl and roll each ball of dough through the cinnamon and sugar mixture to coat well.

Step 7

Place on a greased baking sheet or a cookie sheet covered with wax paper or silicone baking mat.

Step 8

Bake 8-10 minutes. Check for the tops to start firming up, and the sides to show a bit of browning. Make sure they are cooked but do not over bake. Allow to cool on baking sheet for at least ten minutes before transferring to a wire cooling rack.