If you want to cheat, or aren't in the mood to pop and measure popcorn.
1 bag Butter Flavored Corn Puffs
(we use the Western Family brand that you find in the chip aisle)
1 cube butter
1 cup brown sugar
1 cup light corn syrup
1/2 tsp. baking soda
Mix butter, sugar, and corn syrup in 1 1/2 qt. saucepan over medium heat. Boil 4 min. Remove from heat and mix in soda. (mixture will foam up) Pour over Puffs in a large bowl until coated. Spread on wax paper to cool.