Toss the sausage into a skillet over medium heat and cook until it's browned and crumbles. Don't drain the fat, that's where the flavor and magic are.
Add the butter and flour
Now that the sausage is browned drop in the butter and let it melt into the sausage crumbles. Sprinkle the flour over the top and stir until everything's coated in the butter/flour roux.
Pour in milk and chicken flavoring
Slowly add the milk, stirring constantly to incorporate the roux to thicken the gravy. You can use a whisk or a wooden spoon, a whisk can break up your sausage crumbles smaller, so if you prefer larger sausage chunks I would use a wooden spoon. Add the chicken base at this time as well.
Serve and Enjoy!
Ladle that creamy sausage rich goodness over warm biscuits.