For cheese layer, combine cream cheese, sugar replacement, vanilla and 1 egg in mixing bowl. Stir to mix well, spread in bottom of unbaked pie shell. For pie layer, combine pumpkin, milk, 2 eggs sugar replacement and spices in a mixing bowl, beating to blend thoroughly. Carefully pour over cheese layer. Bake at 350 degree for 65 to 70 min or until knife inserted comes out clean.