Preheat oven to 375 and line baking sheets with parchment paper or a silicone baking mat.
Combine 1 ½ cups sugar and butter in a mixing bowl. Cream the butter and sugar together using a mixer or by hand, just until it is light and fluffy. Do not overbeat. One the mixture is nice and smooth, add the eggs and vanilla. Beat or mix again until just smooth.
In a separate bowl, mix together the flour, salt, baking soda, and cream of tartar. Slowly stir the dry ingredients into the butter/sugar mixture until cookie dough is smooth and well mixed.
Mix together the sugar and cinnamon for the coating, either in a bowl or on a plate. I like to do this on a plate and then roll the cookie dough balls through it.
Now for the fun part! Roll batter into 2-inch size balls. Recipe will make about 18 jumbo cookies. Once you have rolled out all of the dough into balls, you are ready to roll the dough in the sugar mixture.
Place the cookies on prepared cookie sheets. Bake for 8-10 minutes. Cool before serving or storing.