In a pot bring water and potatoes to a boil; cover and simmer 10 minutes or until tender. Drain, reserving 1/2 cup liquid. Return potatoes to pan and add 1/4 tsp salt. Mash potatoes using 1/3 - 1/2 cup of the potato liquid.
In a measuring cup mix together broth and 2 tablespoons flour.
Coat steaks with remaining flour (2 TB), 1/4 tsp salt and the pepper.
Spray skillet with Pam and set over high heat. Add steaks and cook 2 minutes per side.
Stir in mushrooms and broth mixture; bring to a boil. Cover and simmer 20-30 minutes. Uncover and cook until gravy thickens.