Mom'S Best Peanut Butter Cookies
["1/2 c. peanut butter (crunchy or smooth)", "1/2 c. soft butter", "1/2 c. sugar", "1/2 c. brown sugar, packed", "1/2 tsp. salt", "1 egg", "1/2 tsp. vanilla", "1 c. flour", "1/2 tsp. soda"]
["Cream peanut butter and butter.", "Mix in sugars thoroughly. Beat in egg and vanilla. Sift dry ingredients, then mix slowly in creamed mixture. Chill 1/2 hour.", "Roll into small balls.", "Place on ungreased cookie sheet. Flatten with fork.", "Bake at 350\u00b0 for 15 to 18 minutes."]
["peanut butter", "butter", "sugar", "brown sugar", "salt", "egg", "vanilla", "flour", "soda"]