Make oatmeal layer. Grease a 9 x 9 x 1 1/3-inch baking pan. Oatmeal Layer: Mix oleo and sugar. Beat in egg and add 1/2 teaspoon vanilla. Sift flour with soda and 1/2 teaspoon salt and combine with mixture. Stir in oats and 1/2 cup chopped nuts. Remove 1 cup of oatmeal mixture and press remaining mixture into bottom of baking pan. Preheat oven to 350°. Combine chocolate, butter, milk and 1/4 teaspoon salt in saucepan and cook over low heat. Remove from heat and stir in 1/2 cup nuts and 1 teaspoon vanilla. Spread fudge mixture over oatmeal mixture in pan and sprinkle the remaining cup over the top. Bake 25 minutes and let cool in pan.