Chocolate Chip Pizza Cookie

½ c sugar
⅓ c brown sugar
½ c margarine, softened
1 tsp vanilla
1 egg
1¼ c flour
½ tsp baking soda
½ tsp salt
1 c chocolate chips
½ c chopped nuts (optional)

Mix sugars, margarine and vanilla. Beat in egg. Stir in flour, baking soda and salt. Mix in chocolate chips and nuts. Spread dough into a 10 inch circle on a 13 inch greased foil pizza pan. Bake in a 375º oven for 25 minutes. Cool and slice into 16 wedges.