Gravy is magical. I know it's a weird thing to say but unless you have never made gravy you wouldn't know what I was talking about.
You only need 3 things.
3 cups of milk
3 tablespoons of flour
Brown your sausage. Do not drain the grease. You will need it.
While you are doing that blend the flour and one cup of the milk. Make sure you stir out all the lumps.
Add the remaining milk to the browned sausage and heat it almost to a boil. The grease will rise to the top and it will look icky but patience my young grasshopper.
When it has warmed up slowly add in the milk/flour mixture. Keep stirring constantly.
Then like magic it turns into a smooth, creamy, gravy.
I love mine over homemade biscuits.