Melt together butter (see note), baking chocolate, and cream cheese over medium heat.
Add almond butter (or peanut butter/sunbutter) and beat in with an electric mixer.
Remove from heat and stir in remaining dry ingredients. Blend with an electric mixer to combine as well as possible. Then, blend in vanilla extract
Spread mixture into prepared pan evenly. Chill in refrigerator until set.
If the butter is softened to room temperature, it does not need to be melted into the cheese and chocolate. It can be beaten in with the almond butter instead.1 teaspoon of stevia concentrated powder is equivalent to about 1 cup of sugar if you'd like to use another low carb sweetener.If you notice some oil separation, it will be okay once mixture cools. You can try adding a tablespoon of heavy cream and see if that helps the mixture blend together better.