Keep in a sealable plastic bag and eat within 2 days ... 125 mg sodium (if using lower-sodium microwave popcorn). Calories from fat: 49%. Put all ingredients in a large bowl and toss together.
As for nutritional breakdown, 1 cup of Smartfood White Cheddar popcorn has 70 calories, which comes out to 160 calories per serving (with the serving size on the bag being 2 ½ cups). Per serving ...