Pop the popcorn in 1 Tbsp of canola oil. Lightly salt. In a large microwavable bowl, melt the marshmallows and butter... 2 min, then stir. 1 min, then stir. Combine the popcorn with the marshmallow mixture. Pat into a 9x13, lightly buttered, cake pan. For an added bonus, you can add a bag of M