Preheat the oven to 375°F. Place the unbroken eggs in a bowl of warm water to bring them to room temperature, set aside
Sift the flour and baking soda into a mixing bowl. Add the salt and whisk well to combine, set aside.
In the bowl of a stand mixer, fitted with the flat beater, beat the softened butter on medium speed for 1-2 minutes. Scrape down the sides of the bowl.
Add the sugar, brown sugar, and vanilla to the butter and mix on low until incorporated, then beat on medium speed for 2-3 minutes until the butter is light a fluffy. Scrape down the sides of the bowl.
Add the eggs one at a time, mixing on low speed after each addition until well incorporated. Be sure to scrape the bowl in between additions
Add the flour mixture to your mixing bowl in 2-3 batches alternating with the applesauce. Scrape down the sides of the bowl and mix well (about 30-40 seconds) after each addition.
Fold in the chocolate chips.
Measure out about 1 1/2 tablespoons of dough for each cookie. Place on a parchment lined cookie sheet 2 inches apart.
Bake at 375°F for 12-14 minutes
For the applesauce I like to buy the pre-portioned packs of unsweetened applesauce. Each cup is 4oz which is exactly how much is needed for the recipe.