Popcorn Fluff Puffs

1 (7 1/2-oz.) jar Marshmallow Fluff (2 1/2 cups)
1/4 cup butter or margarine
8 cups popped unsalted, unbuttered popcorn

Grease a 9 x 9-inch baking pan and set aside.

Combine Fluff and butter in a micro-wave safe dish. Cook on HIGH* 2 minutes; stir and cook 1 minute more. (Or combine Fluff and butter in a medium saucepan over medium-high heat, stirring constantly until Fluff boils.)

Stir in popcorn. Using a spatula or waxed paper pat into pan. Cool. Cut into bars.

*Based on a 600-watt oven.

Makes nine 3-inch puffs
Source: Durkee-Mower Inc.