Grease your cookie sheet with non-stick cooking spray or butter, or line it with parchment paper.
Preheat the oven to 350 degrees Fahrenheit.
Add 1 cup of softened butter and 1 cup of Granulated sugar into the mixing bowl. Mix on medium high speed for 2 - 3 minutes until well combined, light and fluffy.
Add 1 teaspoon of vanilla and 1 egg into the mixing bowl. Mix on medium speed for 1 - 2 minutes or until completely combined.
Turn the mixer on low and slowly add in 3 cups of flour, 1 teaspoon of baking soda and .5 teaspoon of salt into the mixing bowl. Scrape the sides down as needed and continue mixing until all the ingredients are well combined.
Diving the dough into two equal halves.
Add red food coloring to one half of dough and mix until color is well dispersed.
Lightly flour the counter and roll the plain dough out until it is ½ - ⅝ of an inch thick. Then repeat for the red dough.
Lay the red dough on top of the plain dough and gently roll them again so they are pressed together.
Carefully roll the dough lengthwise into a log. Cut off the edge if needed so that it is a straight end.
Add holiday sprinkles to parchment paper or baking sheet and then gently roll the log of dough into the sprinkles so they stick to the dough.
Using a knife, cut .5 inch thick slices of dough and place them a few inches apart on the baking sheet.
Place them into the oven and bake for 10 minutes.