Easiest Peanut Butter Fudge

2 C sugar
1/2 C milk
1 tsp vanilla
3/4 C peanut butter

Line an 8-inch square pan with foil and grease lightly. In a large saucepan, combine sugar and milk and bring to a boil. Boil 1 1/2 minutes, stirring occasionally. Remove from heat and stir in peanut butter and vanilla. Pour into prepared pan. When firm, cut into pieces.