Mix above ingredients thoroughly. Grated cheese to sprinkle over layers. Butter or oil in frying pan as needed. Put about 1 tablespoon butter on hot frying pan or griddle. Drop batter by spoonsful onto hot griddle. Spread thin with back of spoon. Turn when ready. Spread ricotta mixture. Roll and place open side down in pan that is covered with sauce. Cover with sauce. Sprinkle cheese. Bake at 350 degrees. Makes 25 to 30 crepes.