Country Eggs Benedict Muffins

Cook sausage in a medium skillet over moderate heat, stirring and breaking up pork with a spoon, until no longer pink, about 4 minutes. Sprinkle sausage with flour and cook, stirring, 2 minutes. Add milk in a slow stream and simmer, stirring occasionally, until thickened, about 3 minutes. Keep sausage gravy warm, covered over very low heat.|Heat oil in a large non-stick skillet over moderate heat, until hot and break eggs into skillet, keeping them in one layer. Cook eggs over moderately low heat, until white on underside is set, about 2 minutes. Flip eggs and continue to cook until whites are set but yolk is still runny, about 30 seconds more.|Place muffins cut side up on serving plates and top each with one egg, ¼ of gravy and serve immediately.|Sausage gravy yields about 1 1/3 cups.