Step 1

In large saucepan, melt butter with marshmallows on low heat. Stir constantly until marshmallows are completely melted and smooth. Add in gelatin powder, mixing until smooth.

Step 2

Fold in rice krispies cereal. Press mixture into a buttered 13x9 baking dish. If you want THICKER treats, use a 9-inch square pan. Frost treats with melted dark chocolate. Allow to set, about one hour. Cut into squares and enjoy. Store in a covered container.