Pecan Bars
["2 c. flour", "1 c. brown sugar", "1/2 c. shortening", "1/2 c. margarine", "1/2 tsp. salt", "1 egg yolk", "1 tsp. vanilla", "4 eggs", "3/4 c. sugar", "1 1/4 c. Karo", "1/2 c. melted margarine", "1/2 c. flour", "1 tsp. vanilla", "2 c. grated pecans"]
["Pour over hot crust; bake at 350\u00b0 for 20 to 30 minutes. Center should be almost firm."]
["flour", "brown sugar", "shortening", "margarine", "salt", "egg yolk", "vanilla", "eggs", "sugar", "margarine", "flour", "vanilla", "pecans"]