Green Tomato Pie

6 or 7 medium green tomatoes (3 cups when chopped)
2 tbs lemon juice
1/2 tsp salt
3/4 tsp cinnamon
3/4 c sugar
2 tbs corn starch
top and bottom crust
1 tbs margarine

Cook chopped tomatoes, juice, and salt for 15 minutes. Mix sugar and corn starch. Stir into tomato mix. Cook until clear. Add margarine and cool - pour into crust. Cook for 40-50 minutes at 425°.