Stir the flour, baking soda, salt, and cinnamon. (These are the dry ingredients)

In a different bowl, mix the butter, sugar, vanilla. (These are the wet ingredients)

After mixed, add the eggs to the wet ingredients, and mix again thoroughly.

Add the dry ingredients to the wet ingredients bit by bit, while mixing.

Optional Step: Add something to the batter, like chocolate, coconut, peanuts, whatever you'd like, and mix well.

Bake for 10-15 minutes at 340-350 Fahrenheit. Enjoy!!!