Grandma Erickson'S Chocolate Chip Cookies
["1 c. melted butter or margarine", "1 c. brown sugar", "1 c. white sugar", "2 eggs", "1 tsp. vanilla", "1 c. old-fashioned oatmeal", "2 1/4 c. presifted flour", "1 tsp. baking powder", "1 tsp. baking soda", "1 c. semi-sweet chocolate chips", "1/2 c. chopped walnuts (optional)"]
["Melt butter or margarine.", "Add sugars.", "Beat eggs and add to butter and sugar along with vanilla.", "Add dry ingredients followed by chocolate chips and walnuts, if desired.", "Bake at 350\u00b0 for 10 to 12 minutes until light brown.", "Makes about 4 dozen medium sized cookies."]
["butter", "brown sugar", "white sugar", "eggs", "vanilla", "old-fashioned oatmeal", "flour", "baking powder", "baking soda", "semi-sweet chocolate chips", "walnuts"]