Keto Cola Chocolate Cake

Name: Keto Cola Chocolate Cake
Ingredients: 2 3/4 cups almond flour; 1 1/2 cups stevia ((granulated)); 1/2 cup cacao powder; 2 teaspoons baking powder; 1 teaspoon salt; 1/2 cup butter ((granulated)); 1 avocado (puréed); 2 teaspoons vanilla; 4 ounces dark chocolate ((granulated)); 1 cup Zevia Cola; 1/2 cup butter; 1/3 cup Zevia Cola; 1/2 cup cacao powder; 1 pinch salt; liquid stevia ((granulated))