Quick-ish Caramel Popcorn

I found this recipe at Mommy's Kitchen and since I had all the ingredients on hand I made it for a quick dessert tonight (to encourage a whine free dinner - "No caramel popcorn if you don't eat a good dinner" kinda thing). Super good and definitely addictive. I want more right now, but we ate it all!

Quick-ish Caramel Popcorn

1 bag (2.9oz size) microwave popcorn, popped (with un-popped kernels removed) or 8 cups airpopped popcorn
3/4 cup brown sugar
1/4 cup butter
3 tablespoons corn syrup
1/4 teaspoon salt
1/4 teaspoon baking soda
1/2 teaspoon vanilla

Put popped popcorn into a large baking dish (I used a 11x15 pyrex) that has been well greased or really well sprayed with non-stick cooking spray. In a saucepan combine brown sugar, butter, and corn syrup. Cook on LOW heat until butter melts, then cook on low without stirring for about 4 minutes, it should be bubbling gently during the 4 minutes. Remove from heat. Stir in baking soda and vanilla. Quickly pour as evenly as possible over the popcorn in the baking dish. With a non-stick sprayed spatula or wooden spoon mix the popcorn gently to coat the popcorn evenly. Bake at 300 degrees for 15 minutes. Turn pan out onto a few sheets of waxed paper and break up the clumps. Let cool and then serve. Store airtight in containers or ziplocks.