Peanut Butter Cookies - cooking recipe

Ingredients

1 c. margarine or butter, softened
1 c. peanut butter
1 c. white sugar
1 c. brown sugar, packed
2 eggs
2 1/2 c. flour
1/2 tsp. salt
1/2 tsp. baking soda
1/2 to 1 tsp. vanilla
M&M's candies or chocolate chips (optional)

Preparation

Cream butter and peanut butter together.
Also, cream into the mixture the white sugar and brown sugar.
Stir in eggs and vanilla.
Gradually mix in flour, salt and baking soda.
Optional ingredients can go in last, if wanted.