Brown the turkey in a medium skillet on medium-high heat; add in the fennel seeds, garlic powder, onion powder, and sage. Cook until no pink remains, about 5 minutes.

In a medium sized saucepan, melt the butter on medium heat.

Whisk in the flour, and then whisk in the milk.

Whisk well for about 5 minutes just to a slight boil, adding in the salt and pepper to taste.

Once done, remove from heat and mix in the cooked sausage.

Serve topped over warm biscuits.