Place sweetener, stevia extract and blackstrap molasses in a bowl or jar. If using a jar place lid on securely and shake jar vigorously to mix in the molasses. You can also stir with a spoon or a fork to ensure that all the molasses is evenly mixed and you don't have any clumps.
This sweetener replacement should be used based on the equivalents of Erythritol and stevia mixture which for me is ⅓ cup sweetener to replace 1 cup of sugar.