Melt butter over low heat. Stir in marshmallows until they are soft but not melted. Add flavored gelatin mix. Stir until everything is a nice pink color throughout. (The gelatin may not dissolve completely but that's alright.)
Put popping oil and popping corn in the popper. Fasten the lid securely. Begin stirring using medium-high heat. Popping will start in about 1 minute. Continue stirring until popping almost stops. Remove from heat and pour in half of the mixture, close lid, and stir. Then add in remaining mixture, close lid, and stir.
Pour into bowl, let cool, and serve. Store in airtight container.
Optional: Once cool - for added fun - form mixture into small popcorn balls.
Contributor: Wabash Valley Farms