Rice Krispies Squares

¼ cup Butter or Margarine
1 (250 g) pkg Marshmallows (40)
½ tsp Vanilla Extract (optional)
6 cups Rice Krispies Cereal

In large sauce pan over low heat, melt butter or margarine, add marshmallows; stir until melted and well blended. Remove from heat. Stir in vanilla. Add cereal, stirring until coated. Using lightly buttered spatula press into buttered 3.5 L (13” x 9”) pan. Cool, cut into squares.

For chewier squares use 50 marshmallows.