Sour Cream Apple Squares
["2 c. all-purpose flour", "2 c. packed brown sugar", "1/2 c. butter", "1 c. chopped nuts", "2 tsp. ground cinnamon", "1 tsp. baking soda", "1/2 tsp. salt", "1 c. (8 oz.) sour cream", "1 tsp. vanilla", "1 egg, beaten", "2 c. chopped apples", "whipped cream (optional)"]
["In a mixing bowl, combine flour, brown sugar and butter. Blend at low speed until crumbly.", "Stir in nuts.", "Press about 2 3/4 cups into the bottom of an ungreased 13 x 9 x 2-inch baking pan."]
["flour", "brown sugar", "butter", "nuts", "ground cinnamon", "baking soda", "salt", "sour cream", "vanilla", "egg", "apples", "whipped cream"]