The original recipe calls for 12 cups of popcorn and the caramel ingredients are doubled. If you're doing this in a large paper grocery sack, go ahead and double the recipe. If you're going to do it in a microwavable bowl with a lid, such as the Tupperware microwave cookery stuff, then use just 6 cups of corn and the recipe as it appears here.
Microwave Caramel Corn
Put in 1 qt. measuring cup, or in a large microwavable bowl with a microwavable lid (this is what I do):
½ c. brown sugar
¼ c. butter
2 Tablespoons white corn syrup
¼ teaspoon salt
¼ teaspoon baking soda
(All microwaves are slightly different and you may need to adjust your times appropriately) Microwave on HIGH and boil for 2-4 minutes. ( I do 1 minute, stir, 1 minute stir, 30 seconds remove) Pop 6 cups of corn. Spray non-stick cooking spray, such as PAM, in a large paper grocery sack. (I just use my Tupperware microwave bowl with lid that I cook the caramel in.) Put popped corn in bag (in bowl) and pour (stir) caramel mixture over it. Put in microwave on HIGH for 1 minute; shake; microwave 45 seconds; shake; microwave 30 seconds; shake; microwave 30 seconds; shake. Pour caramel corn onto a cookie sheet to cool. (I use a silicone liner in my cookie sheet, so there is no sticking) Stir while cooling so the pieces separate.
I'm going to a craft fair tonight to sell my handmade cards and scrapbook and paper craft items. These treat bag toppers are so adorable and fun to make. I'll be selling a topper kit. You'll be able to add your own treats to the cellophane bags, assemble your treat toppers as shown here and give away treats to delighted friends! More info on the treat bags here.