Bohemian Nut Slices
["1 envelope dry yeast", "1/4 c. warm water", "1 tsp. sugar", "2 c. flour", "1/2 tsp. salt", "3/4 c. butter", "2 eggs, separated", "1/2 c. sugar", "1 tsp. vanilla", "1/4 c. chopped nuts", "powdered sugar"]
["Sprinkle yeast on warm water.", "Let stand 10 minutes.", "Sift flour and salt.", "Cut in butter; blend in yolks and yeast.", "Mix until a smooth ball is formed.", "Beat egg whites until stiff, gradually add 1/2 cup sugar and vanilla."]
["yeast", "warm water", "sugar", "flour", "salt", "butter", "eggs", "sugar", "vanilla", "nuts", "powdered sugar"]