Preheat the oven to 350 degrees Fahrenheit (175 degrees Celsius). Line two baking pans with parchment paper.
Mix the flour, baking soda, and salt together in a large bowl. Set aside.
Add the brown sugar, white sugar, maple syrup, melted coconut oil, applesauce, and vanilla extract to a large mixing bowl. Stir well or mix with a hand or stand mixer.
Gradually mix in the flour mixture until well blended.
Fold in the oats and chocolate chips. Cover and chill for 30 minutes.
Use a cookie scoop to add dough balls to the lined baking trays, spacing them 2 inches apart.
Bake for 15–17 minutes, until the sides are just beginning to golden brown.
Allow the cookies to cool on the tray for 10 minutes before transferring them to a wire rack.
Notes
STORE baked cookies in an airtight container at room temperature for up to one week. You can also store the dough in the fridge for 7–10 days before baking. Freeze leftover cookies in an airtight bag for up to 6 months.To FREEZE the cookie dough, wrap it tightly in plastic wrap and store it in the freezer; thaw in the fridge before baking. For REHEATING, warm cookies in the microwave for 10–15 seconds to refresh their softness.