Question: how long to bake fully cooked chicken sausage?
Answer: Step 3: Roast for 30-40 minutes while flipping the sausages every 10 minutes. Thick chicken sausages take about 40-60 minutes to get completely cooked. On the other hand, thin chicken sausages need about 20-25 minutes. You will know the chicken sausages are done when they change into a brownish color.