Cut a slit on the top of the sweet potatoes and gently fluff the flesh with a fork, being careful to leave the skin intact.
Heat 3 tablespoons of the ghee in a skillet over medium-high heat. Add the sausages and cook for 1 to 2 minutes, until well browned. Flip the pieces and add the blueberries. Cook for 2 to 3 minutes longer, until the blueberries, have begun to burst. Use a spoon or fork to gently crush any remaining blueberries.
Divide the sausages, blueberries, and any juices between the sweet potatoes.