Chocolate Caramel Pecan Bars(Barbara Morkus, Carbondale, Colorado)  
["about 1 c. (1/2 lb.) butter or margarine, cut into chunks", "1 c. firmly packed brown sugar", "1 large egg yolk", "2 tsp. vanilla", "2 c. all-purpose flour", "2 c. chopped pecans or almonds", "Caramel Filling", "2 c. (12 oz.) semi-sweet chocolate baking chips or chunks"]
["In a bowl, beat to blend 1 cup butter, brown sugar, egg yolk and vanilla. Add flour and mix well.", "Press mixture evenly over bottom and sides of a buttered 10 x 15-inch pan. Sprinkle nuts over dough. Bake in a 350\u00b0 oven until crust is golden brown, about 25 minutes.", "Pour caramel into crust and spread evenly. Sprinkle with chocolate. When chocolate softens, about 5 minutes, spread smooth.", "Let cool.", "Cut into 30 squares, then cut each in half diagonally.", "If making ahead, cover and chill up to 1 day.", "Freeze to store longer.", "Makes 60."]
["butter", "brown sugar", "egg yolk", "vanilla", "flour", "pecans", "Caramel Filling", "semi-sweet chocolate baking chips"]