To prepare a vegan avocado peanut butter brownies recipe, first you will need to preheat your oven to 350 degrees Fahrenheit (180 degrees Celsius) and prepare your ingredients. First, you'll need: 12 cup (120 milliliters) of unsweetened coconut oil, 1 tablespoon (25 grams) unsalted butter, and 1 teaspoon (2.5 grams), of vanilla extract. You can also use coconut milk or almond milk. If you aren't vegan, substitute almond flour for the coconut flour. Using an electric mixer, beat the ingredients together on medium speed until they're light and fluffy, about 5 minutes. Then, add the chocolate chips and mix until combined. Pour the batter into the prepared pan and bake for 20 to 25 minutes, or until the edges are set and the center is set. Allow the brownie to cool for 10 minutes before cutting it into squares.