Preheat the oven to 375°F and line 2 baking sheets with parchment paper.
In a small bowl, whisk together the flour, baking powder and salt; set aside.
In the bowl of a stand mixer, beat the sugar, applesauce and coconut oil on medium speed until well combined, 1 to 2 minutes. Add the egg and vanilla extract and beat until combined, 1 more minute.
With the mixer on low speed, slowly add in the dry ingredients and mix until just combined, without over mixing. Fold in the chocolate chips.
Divide the dough into 1 ½ tablespoon-sized balls using a spring-loaded scoop. Bake for 10 minutes or until cookie edges have set but the center still looks soft. Cool on the baking sheet for 5 minutes, then transfer to wire racks to cool completely.
Notes
Storage: Store in an airtight container for up to 4 days at room temperature.Freezing: Freeze the cookies on a baking sheet and transfer to a freezer bag or container. They will keep well for up to 3 months.Substitutions: Make these cookies vegan by swapping the egg for a flax egg.