Preheat the oven to 350 degrees Fahrenheit and line a 8-inch square baking pan with parchment paper.

Begin by mixing the wet ingredients. To do so, heat the bitter, chocolate chips, and granulated sugar in a skillet or saucepan over medium heat, stirring frequently, until everything has melted together. Be sure to heat this mixture slowly so that it doesn’t get too hot. Note: you can also perform this step using your microwave.

Remove the skillet from the heat and mix in the beaten eggs, avocado oil, and pure vanilla extract.

Stir together the oat flour, cocoa powder, instant coffee granules (if adding), baking soda, and sea salt in a mixing bowl. Transfer the dry ingredients to the skillet with the wet ingredients, and mix well until a smooth batter forms.

Pour the brownie batter into the prepared baking pan, and bake on the center rack of the preheated oven for 18-22 minutes, or until the brownies appear as though they have set up.

Remove the brownies from the oven and allow them to cool for at least 20 minutes before slicing.

Do note, these brownies are very delicate, so clean slices aren’t a guarantee.