Brown sausage in a large skillet, crumbling up the meat as you go. When the sausage is finished cooking, remove from the pan and set aside in a bowl. Reserve 2 tablespoons of grease for gravy. Drain the rest.
Over medium-low heat, mix together flour with reserved grease until well combined. Slowly add in the milk while stirring constantly. Turn to a simmer and cook for 5 minutes while whisking the gravy. Add in seasonings and serve.