Heat the oven to 350° F.
Line an 8x8" square baking dish with parchment paper. This will make it easier to remove and cut the bars later.
In a large bowl, whisk the egg, coconut sugar, melted and cooled coconut oil and vanilla until combined.
Add the almond flour (sifting it through a sieve if it's lumpy) and salt. Stir with a spatula until combined. The batter will be thick.
Stir in the chocolate chips until evenly distributed.
Scrape the batter into the parchment-lined baking dish. Use the spatula or your hands to pat it into an even layer (don't press too hard). If it's sticky, get your spatula or hand slightly damp with water, then blot any excess water on the surface with a paper towel when you're done.
Bake until golden brown around the edges and set in the center, about 20-25 minutes. Cool completely on a cooling rack, if using. Cut 3 rows down and 3 rows across to make 16 bars.