1 cup milk
1 cup water
2 1/2 cups thick marshmallows
1 tablespoon vegetable oil
Heat milk, water, and marshmallow creme in microwave safe bowl. Stir until smooth; gradually stir in peanut butter until smooth after each stirring. Spoon batter into prepared 24x36 inch baking pan.
Bake in preheated oven for 10 to 15 minutes (A) or until a toothpick inserted comes out clean. Cool completely. Cool completely on wire rack. Store, covered, at room temperature.