In a large mixing bowl, whisk together the oat flour, cocoa powder, tapioca starch, and salt.
100 grams oat flour, 1/2 cup cocoa powder, 1 tablespoon tapioca starch, 1/2 teaspoon salt
Gently stir in the coconut sugar, melted butter, eggs, avocado oil, and vanilla until just combined. Then fold in 1/2 cup of the chocolate chips.
1 cup coconut sugar, 3/4 cup unsalted butter, 3 large eggs, 2 tablespoons avocado oil, 2 teaspoons vanilla, ½ cup chocolate chips
Cover and place in the fridge to rest for 30 minutes.
Preheat oven to 350 degrees and line an 8"x8" glass baking dish with parchment paper.
Evenly spread the brownie batter into the pan and sprinkle the remaining chocolate chips on top. Bake for 25-30 minutes or until it's mostly set but not yet completely firm to the center.
¼ cup chocolate chips
Let cool completely before removing from the pan and slicing. Enjoy!