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How to make popcorn brownies
Preheat your oven to 375 fahrenheit (190 celsius).
Grease and line a 9 x 9 inch baking tray.
It should be about an inch deep, but you can also line the pan with aluminum foil if you'd like.
Melt your butter or margarine. Melt your butter/margarine in a small pan over a low heat for a minute or two.