Peanut Butter Pie
["1 1/4 c. sugar", "2 Tbsp. flour or cornstarch", "2 Tbsp. peanut butter", "1 tsp. vanilla", "3 egg yolks", "1 1/2 c. milk", "1 Tbsp. margarine"]
["Cook until thickening.", "Pour into cooked, cool pie crust."]
["sugar", "flour", "peanut butter", "vanilla", "egg yolks", "milk", "margarine"]