Homemade thin crispy sugar cookies

On November 6, I made some thin sugar cookies!
The ingredients were:

Ingredients

• 1 stick butter, softened (1/2 cup)
• 1 cup sugar
• 1 egg
• 1 teaspoon vanilla (I used vanilla bean paste, but extract is fine)
• 1 teaspoon baking soda
• 1/8 teaspoon salt
• 2 cups flour

I added some almonds and almond extract. I made a mistake by adding 1 teaspoon of sugar to my first batch of cookies. They were shaped into balls and would not spread! I then looked back at the recipe and saw I was supposed to add 1 cup of sugar! I did not add that much sugar at all. I added about a tiny bit less than 1/2 a cup of sugar.
I think I added only one cup of flour but I don't remember. ):
The outcome of my second batch tasted amazing!!
Here is the link to the recipe I kind of copied. http://www.crazyforcrust.com/2013/04/thin-sugar-cookies/#comment-135688