Cut and remove outer leaves and cut stems of artichokes. Rinse with cold water, drain and place in saucepan. Boil in enough water to cover half of the artichokes, add lemon juice and cook for 45 min. Drain well. Place in baking pan. Mix together rest of the ingredients and fill artichokes by opening leaves and placing cheese mixture on them. Sprinkle tops with remaining cheese mixture and bake in 350° F. oven for 25 min.