Mix popcorn and rice cracker mix together in a large bowl.
In a small microwave-safe bowl, microwave butter on HIGH until melted, 20 seconds. Stir in soy sauce, ginger and oil. Drizzle over popcorn mixture; toss.
Spread mixture on a baking sheet and bake at 300°F. for 20 minutes, stirring once halfway through.
Allow to cool, before serving. Store in an air tight container.